Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b0f66aeb152746…

MALICIOUS

PDF

80.4 KB Created: 2021-03-23 16:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: da65c392ce41da9e6cf989bfb53cd11f SHA-1: 47ca1a24d23c7e82674a381149ca1693e6d5c07d SHA-256: c2b0f66aeb152746617188b9c8d2b876bb7bdfe9fd8b666aae1c4bc2a7c2f87a
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious content, likely a phishing lure disguised as a search result. The presence of embedded URLs, despite the absence of explicit script content, points towards an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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/wix?keyword=rise+of+skywalker+script+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404123/normal_6053647d9ca4d.pdfIn PDF document text
    • https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/bejanilofibuj-jaletez.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/pakelekagob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464735/normal_6005114036057.pdfIn PDF document text
    • https://bogogumufen.weebly.com/uploads/1/3/4/0/134018830/najalusided_panevusuletij.pdfIn PDF document text
    • http://fikosarodone.medianewsonline.com/xexukifivufupibodemen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388280/normal_5ff8d87d7b41b.pdfIn PDF document text
    • http://zugemenelil.medianewsonline.com/starving_starved.pdfIn PDF document text
    • https://xutativapejan.weebly.com/uploads/1/3/4/5/134521393/dolanusolo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388825/normal_604603c355b50.pdfIn PDF document text
    • https://gumulopeviw.weebly.com/uploads/1/3/5/3/135348062/d69ec3bc4d5f.pdfIn PDF document text
    • https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/dunawebot-dokemenuw.pdfIn PDF document text
    • http://risumeboze.getenjoyment.net/13942289286.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_601bb725288b4.pdfIn PDF document text
    • http://metiwizonud.getenjoyment.net/vuzisigogifa.pdfIn PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/xududof.pdfIn PDF document text
    • https://lopepuru.weebly.com/uploads/1/3/4/3/134320072/ritovuwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_6022593488076.pdfIn PDF document text
    • http://vuwimoxit.mygamesonline.org/66862306161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_6010d357765b1.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://retiziwo.myartsonline.com/authentic_leadership_harvard_business_review.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/45894014112.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF094 5096 bytes
SHA-256: 8a477087710429ad0ea1b4dfd8e0dc0b7a2c2ca9718e2c3ad1e216b737a9c09b
font_01_sfnt_off0001021f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 10380 bytes
SHA-256: a4dc224b9ac9704d4cf8a778ea0e6ee22db3020cd5298658571c6d43ef866229
font_02_sfnt_off00012596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12596 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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