Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08a528307aa97dd…

MALICIOUS

PDF

76.9 KB Created: 2021-06-11 04:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 711c67084163a6beab967431a0158ae2 SHA-1: 5dd14443273a3ae8ec2309b72f0fafb7fc02e884 SHA-256: f08a528307aa97ddbf067e1d50b28d3dc8f97d83c979e90fc0372bf09fd8c494
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs hosted on compromised or disposable domains, likely for phishing or malware distribution. The embedded URLs and the document's metadata suggest a lure related to "sims lp hack", aiming to trick users into clicking through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crysiq.ru/uplcv?utm_term=sims+lp+hack PDF link annotation
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/c54da895ea7c9fe80757a242f8836484/53169827890.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/xuseliw.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075469d07b58---zotimu.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/2d1acdd14149bd6a52840f33049a788f/pebepogulur.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/dorokorakotukesabexu.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/50231598757.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/xotofuwetelurokazox.pdfIn PDF document text
    • http://ridendo.cz/files/file/57852660885.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff7a437832---76886403964.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160893043b845c---senamixitimuwez.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/091917481501.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/db160ebeae6ced748bd1a197624215bf/vojetutiribojarezudax.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1f335a5f89---moleboz.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/0v3ad1vhhilp7mf7g0ii0cjc01/15981687603.pdfIn PDF document text
    • https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/b14c5d8c2ee7832ae38e4f190e1b3d94/nunibiwepizosikoga.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/22226895579.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA29 4620 bytes
SHA-256: 1d8dbf8b49b2a399219e67585febc5433bc79a6e0670f326c09f91ce484ff1a8
font_01_sfnt_off0000e9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B5 21824 bytes
SHA-256: 0dfd644dd5dcd0547e89f96dfee107a323ac8aa38d09f74ab5e1e04910758eba
font_02_sfnt_off0001190b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1190B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34