Malicious PDF — malware analysis report

Static analysis result for SHA-256 119fc1bc327e11f0…

MALICIOUS

PDF

76.6 KB Created: 2021-09-03 09:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c9d7bc2711ba10df3d734556bec6b14a SHA-1: 8cf40f3d7b451340508181e9772e7d198a28c580 SHA-256: 119fc1bc327e11f0c400f15d0cbb5b55237fcc37ef0115dae4336700f651d956
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's likely a phishing or malware distribution lure. It functions as a link farm, with numerous embedded URLs pointing to compromised websites and potentially malicious PDF files. The primary goal appears to be directing users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/qtrn1lm7370rhm8elgp3n6a081/42574564000.pdf In PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/b44d0eacda07ad935c418330de9c7a34/86230379179.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/50e0b97ac1132729da7bd4216095f3f2/92246450811.pdfIn PDF document text
    • http://aprt1day.ru/file/wuxakeb.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/48205474808.pdfIn PDF document text
    • http://workcoop.org/fckeditor/userimages/file/20210621153628.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/31629126922.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/52214785667.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/wixisadabarexigasidudul.pdfIn PDF document text
    • https://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/9833ddf564f0679632c325cb87bf7002/53894850977.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/dhg88375bk0vedr1lp2g3fs1sn/93133812981.pdfIn PDF document text
    • http://abwrosedale.com/uploads/files/jomulesunuzikufisuwit.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160fe6b043a12d---vonokizuke.pdfIn PDF document text
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/4cd16f1bddcb87720919920d0e734bd6/71558169059.pdfIn PDF document text
    • http://kleiberit.ru/files/file/85775631793.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/860adbccabf33b70e96f33b3342c38f7/69323905776.pdfIn PDF document text
    • http://thehigh86.com/clients/13680/File/zegimixib.pdfIn PDF document text
    • https://777mto.com/contents//files/92586594876.pdfIn PDF document text
    • https://mannoorpally.com/uploads/file/14720133540.pdfIn PDF document text
    • http://blackivy.pl/userfiles/file/widurolazalegakuvekabiba.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/51028203195.pdfIn PDF document text
    • https://larioenergy.net/uploads/file/56474497334.pdfIn PDF document text
    • http://beijinghuojia.cn/userfiles/file/vipavovise.pdfIn PDF document text
    • https://michelbarbot.com/upload/files/saminezadoxudasu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=abacus+8r+installation+manualPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23E 20040 bytes
SHA-256: 8d839530ff9e22debf02aa720d2c1b67815bb93cc9456049abdc0f8513666fea
font_01_sfnt_off0000f55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55B 10688 bytes
SHA-256: 13b0f1c0a1a1495c400a5bff624a7fea2f312d86c5c81643afc72ce410a08853
font_02_sfnt_off00010dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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