Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9c1abe9e974033…

MALICIOUS

PDF

69.8 KB Created: 2021-02-01 19:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9f4f1ad3c4999d6ab26d5a981fe329fa SHA-1: 9ddc74d964e22590b8d7a6dac29a3fd50abb410e SHA-256: fe9c1abe9e97403371ddb978e29904e72dd228867839c010ffc94fc339133d00
134 Risk Score

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/aws?utm_term=indesign+real+estate+flyer+templates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366028/normal_601134cce4da7.pdfIn PDF document text
    • http://manoligixave.66ghz.com/facebook_mobile_banner_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5fe441cb0958c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483337/normal_5fea0b51b788c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_6011454e27316.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367632/normal_5fffc566e4d2e.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/revolobe_goligosufamesu_dijezala_foxenaj.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/nodekixefemilodaji.pdfIn PDF document text
    • https://sazulolako.weebly.com/uploads/1/3/1/4/131453808/gekenuwerumolukadufu.pdfIn PDF document text
    • https://nunevebola.weebly.com/uploads/1/3/4/8/134846747/1395822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_6013478f72211.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juvetaso/62367037525.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/komposisi_nutrisi_hidroponik.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/80219500134.pdfIn PDF document text
    • http://menumizumiwasij.rf.gd/1109777706.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD553 5400 bytes
SHA-256: f875049834dd506eacc15d282b7ba0660512fc44ece349a6eed338443738ef4e
font_01_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 10248 bytes
SHA-256: 8b0e7e8afb2be720c3724e22cbfcbe346eb185ac28a0b305152f7b9ac9df53fa