Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8ae7e7e7bb21b0…

MALICIOUS

PDF

71.5 KB Created: 2020-12-17 04:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b9d365733ea18dfa0452d0041debf008 SHA-1: e1b2625279954edfb2ecf2c0f1fc123a040ab87c SHA-256: 7b8ae7e7e7bb21b0a3e49b9748633969ca18ee22b246d54fb526a27140a6245c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious nature of the file. Although the document body is heavily obfuscated, the presence of a malicious URL suggests the intent is to redirect the user to a site that likely hosts a secondary payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=john+deere+l120+wiring+diagram In PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/5753841.pdfIn PDF document text
    • https://simixoko.weebly.com/uploads/1/3/4/8/134867908/zokewasiwi.pdfIn PDF document text
    • https://dubanivexog.weebly.com/uploads/1/3/4/3/134331992/883b3e764c4.pdfIn PDF document text
    • https://wekimede.weebly.com/uploads/1/3/4/8/134862148/jotavotosufoxukiputa.pdfIn PDF document text
    • https://kigekasomek.weebly.com/uploads/1/3/4/5/134598498/6993db1245.pdfIn PDF document text
    • https://vozutububedem.weebly.com/uploads/1/3/4/3/134372478/zijulonazop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1480d27a199023ab7f389/t/5fca5978828dec3afb830787/1607096699232/creative_destruction_play.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/attestation_de_vente.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78103717a0f60c403be08/t/5fced7557cc0b10a0ac018b7/1607391063139/country_music_top_100_playlist.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf597deaf37e3b649305dd/1606375805995/mabepidapugixem.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/quality_improvement_work_plan_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56f2f7848ba205d3738c7/t/5fc8b72fb74dd54858df7087/1606989619914/85791592834.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/20156995006.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd01de72f8b574a0f41128/1606222315488/root_booster_pro_apk_rexdl.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc681d1104edf1d77a7ddee/t/5fc9d034ee6dcf7e3633689e/1607061560742/8840854032.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf512c9d7936484084c452/1606373678896/84888610316.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_off0000db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0C 5468 bytes
SHA-256: f9ffe2ed3b9d04ce90c96d17a1d630305566f9658e6e7e2c7bdb0b3b8a4cf36a
font_01_sfnt_off0000ed8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 10436 bytes
SHA-256: 00e1e6107a0195993774ad889187c9328e3bd16bed266eccf49cdaf343952619

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