Malicious PDF — malware analysis report

Static analysis result for SHA-256 6957930d9d2ed088…

MALICIOUS

PDF

81.4 KB Created: 2021-03-14 03:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1de93816f806661127e40069111483ac SHA-1: c52d453d5533f653e9d8339421eea6b7c670f5f1 SHA-256: 6957930d9d2ed088d2fd9a3745fb88d56d59ad136a00f0c3d3218b6b366adb9a
206 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or scam attempt, as indicated by the 'SE_CALLBACK_LURE' heuristic and the presence of numerous external links, many hosted on disposable domains. The document body, though heavily obfuscated, contains text related to 'Midland county warrants', suggesting a pretext for the user to engage further. The ML classifier and ClamAV detection strongly support its malicious nature, likely serving as a lure to a malicious website or to initiate a callback scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=midland+county+warrants PDF link annotation
    • http://risonubokedoxav.scienceontheweb.net/rome_metro_map_2020.pdfIn PDF document text
    • https://tumazalewiguta.weebly.com/uploads/1/3/4/7/134755417/volipatuturaxix.pdfIn PDF document text
    • https://jewakazakiven.weebly.com/uploads/1/3/1/4/131437085/gonafujejekow.pdfIn PDF document text
    • http://jenuxijaf.mygamesonline.org/aikido_bokken_kata.pdfIn PDF document text
    • https://zudasejavezumuj.weebly.com/uploads/1/3/4/0/134017640/28063.pdfIn PDF document text
    • https://sawatulaboror.weebly.com/uploads/1/3/2/7/132710797/dojiwireluzemej.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/lean_management_system_certification.pdfIn PDF document text
    • https://karinavoru.weebly.com/uploads/1/3/4/0/134017817/zumuwagewatesatud.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/solar_energy_advantages_and_disadvantages.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/4735055.pdfIn PDF document text
    • https://sijujufe.weebly.com/uploads/1/3/4/6/134696532/mavuj_wovinafisuv.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/macbeth_act_2_scene_3_summary.pdfIn PDF document text
    • https://lesesagipamagaz.weebly.com/uploads/1/3/0/7/130739561/0a46c4cba5.pdfIn PDF document text
    • https://gotenalonas.weebly.com/uploads/1/3/4/3/134372716/2411871.pdfIn PDF document text
    • https://gexemuxu.weebly.com/uploads/1/3/5/3/135394015/7385018.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
    • https://c33c3ce4-fa2f-4f19-9477-7a801b41b29e.filesusr.com/ugd/ebbcbd_b74f620cee8343e39b2a8a3fe38b5a6f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/resisuna/fupum.pdfIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_c222483548dd40b3817b8b6f4a28cca5.pdf?index=trueIn PDF document text
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_dcceeaf8bc1e4b1cb3da3fdd74f5fe13.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/bravely_second_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/reported_speech_backshift_table.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_off0000f0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A9 4896 bytes
SHA-256: 415aa4df17bb3fa41b770742f450f64d4e6aa2ca9e9f576cad9e86efe5b8681d
font_01_sfnt_off00010166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10166 11724 bytes
SHA-256: b1add3b1a017e83ba108ec68155b91d396e77870d7cd780ab497a8c4b2e4a5a7
font_02_sfnt_off00012894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12894 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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