Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7076694b7534c00…

MALICIOUS

PDF

72.1 KB Created: 2021-09-17 22:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 935ccc3bd4342bbc137af64d88b40caa SHA-1: 4c9f2f3283878d2b40ab2ac40006398b6a292d98 SHA-256: b7076694b7534c00a3dab981bfa41f6d56348a2cd8f14898a7673e32a5e4bfe6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories and disposable hosting domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0c494f63d---96755502375.pdf In PDF document text
    • https://agronlogistics.com/userfiles/files/vajanukeniposevonoval.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/wavogopewilasedalu.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16140bc91b1869---2552042259.pdfIn PDF document text
    • http://vladekoservis.ru/files/lumutaputupumaguguwom.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/9e11a52863f6aae44c8acc00d073d84b/12419698026.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/f4d8de64e0b3f47bc626f0ed8abf12d7/losunatabus.pdfIn PDF document text
    • http://laptopcuhaiphong.vn/upload/files/desojijixowodasub.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/4eacdc48ce584802533b6696f2c378c5/ximaxexi.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/kigazuxiluzabonepepuxako.pdfIn PDF document text
    • http://qlionshousing.ca/userfiles/file/79096593123.pdfIn PDF document text
    • http://biafrapol.pl/pliki/file/pugofiwuvowuzabi.pdfIn PDF document text
    • http://noithatmfc.com/media/ftp/file/42800932482.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/nirupividuvokewuxirikive.pdfIn PDF document text
    • http://93564497.com/userfiles/jejegadakumewipujadabix.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/vewitevazupagalenopepepip.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/4018614071.pdfIn PDF document text
    • https://llbyggodesign.se/UserFiles/files/selokuwewaxiled.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/patotawel.pdfIn PDF document text
    • http://doubler-son-capital.com/photos/files/60516853003.pdfIn PDF document text
    • http://fotografoenricogiampieri.it/userfiles/files/nobemuponumijatigodil.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/kiwidufinuzomoda.pdfIn PDF document text
    • http://accutindustry.com/Upload/files/20210916051332.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=list+of+metals+nonmetals+and+metalloidsPDF link annotation
    • http://louisiana-arts.org.s150269.gridserver.com/siteuploads/editorimg/file/lolaze.pdfIn PDF document text
    • 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_off0000ba0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA0E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD225 10372 bytes
SHA-256: bbf4157effc07c38f20f2e75a23e6a8bca60536ad26df27a70434ae69c215bc6
font_02_sfnt_off0000e98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98F 16316 bytes
SHA-256: dc224effc9cf04590ed47eef11539c5214cc58288c5a27697f91b36882001579

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