Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abbdad2e035a393…

MALICIOUS

PDF

91.1 KB Created: 2021-07-07 00:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7ac6ca6d28332dcdc5f456ee9b261c1e SHA-1: 5ab3576bc30166a4a6c9a7074b7cdeada030ac06 SHA-256: 8abbdad2e035a393d8d40a6c0fcfa0abd262eb185e43a48390b407f61f96ffba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160906775c0cee---wesolir.pdf In PDF document text
    • https://bawwabatrizq.com/userfiles/file/10245304329.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/179d7a4b2fe19146e956bc7d25fa18c6/35372136610.pdfIn PDF document text
    • http://travisreunion.com/clients/1/1d/1d9c560ef9ee6310b862f4c9d288d7bd/File/pelenomisatuj.pdfIn PDF document text
    • http://donkaew-furniture.com/ckfinder/userfiles/files/ropopemurumebidugutuwe.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833caa23665---72562700101.pdfIn PDF document text
    • http://ukicda.com/admin/fckeditor_upfiles/file/2021062111544480554.pdfIn PDF document text
    • http://meyanko.com/userfiles/file///2085905184.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608f97107cde6---fivesanupiraxijel.pdfIn PDF document text
    • https://wipaphun.com/UserFiles/File/bugovojedomutapukedexos.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cfcfc5263b3---38481808719.pdfIn PDF document text
    • http://asijskepotraviny.cz/files/file/sefepolejenotezozi.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160772ce285950---38979339487.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16084528be5a97---64287067120.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/56324198951.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/85vpn0ptpgihr9e40roocqe8nq/lepakenorosedonoj.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/511725308.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4c3594a87---95278916493.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/aad30klpntkglr7l401a8punmg/72675607804.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/39945968770.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/mn5osr5vuh4mhcv9vs4bk3g4su/35306968318.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/bbda6591a46d209f014eccb35bd89286/xavinipuxepiwetibumi.pdfIn PDF document text
    • http://starringthestricklers.com/clients/2/2b/2b6f34f03d9ccbd43d04a050b3ab825e/File/98190704647.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eed6f55500---50811159603.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160cf4228590d7---vojixi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+breed+a+gemstone+dragon+in+dragonvalePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE844 17324 bytes
SHA-256: 3b9a9b0248ad0b70d85432791645ce9176c5649715ff1cfd898d9088cd0586d1
font_01_sfnt_off000115de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115DE 10876 bytes
SHA-256: 07f4f829f9330a79566a5c60c546f415c89877bce70c4edf182a2da356c735cc
font_02_sfnt_off00012ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC9 16860 bytes
SHA-256: 45e13403812777cae157a9b833d8c48f9484b6ade44c0aa289f99da10fce8904
font_03_sfnt_off0001460d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1460D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.