Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d45c18c267af13f…

MALICIOUS

PDF

70.0 KB Created: 2021-01-17 13:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b342214a90f78965d1f2773058bc7dab SHA-1: ef32b8c25b9835f0c3ae14346cabd2027d8e9438 SHA-256: 7d45c18c267af13f591e19d7edadd34e1c8c307d6006ce855570bc4d0cf53b5c
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of 'antares auto tune crack' in a URL indicates a lure for pirated software, a common phishing tactic. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

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 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.
  • 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://trafftec.ru/aws?utm_term=antares+auto+tune+crack PDF link annotation
    • https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/58efca2cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5ff0e84a07e0a.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f8732526e30f.pdfIn PDF document text
    • https://miwozomeme.weebly.com/uploads/1/3/0/7/130775979/zefokefekakoturota.pdfIn PDF document text
    • https://site-1177122.mozfiles.com/files/1177122/social_intelligence_hypothesis_primates.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/c62a8cb9.pdfIn PDF document text
    • https://site-1171714.mozfiles.com/files/1171714/vozoriteputikuxosiviv.pdfIn PDF document text
    • https://site-1174034.mozfiles.com/files/1174034/free_pool_party_flyer_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5ff27d44523fd.pdfIn PDF document text
    • https://site-1228032.mozfiles.com/files/1228032/85416821169.pdfIn PDF document text
    • https://fodonisegijiwos.weebly.com/uploads/1/3/1/4/131437376/d503fecfb.pdfIn PDF document text
    • https://site-1177098.mozfiles.com/files/1177098/donefixatagopes.pdfIn PDF document text
    • https://site-1178370.mozfiles.com/files/1178370/balaam_wood_new_uniform.pdfIn PDF document text
    • https://site-1177333.mozfiles.com/files/1177333/vejesa.pdfIn PDF document text
    • https://site-1176018.mozfiles.com/files/1176018/tedajipuramuzexipirides.pdfIn PDF document text
    • https://zoxuzula.weebly.com/uploads/1/3/4/4/134489613/5660869.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/kigavanus/removing_a_curse_in_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/medicine_inventory_sheet_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/amazon_marketplace_web_service_developer_guide.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_off0000d7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AD 4812 bytes
SHA-256: 807256719697838cb301701cb239e0d13fcf5591fb707280ada9bae734911775
font_01_sfnt_off0000e81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81A 10156 bytes
SHA-256: 2f22c31296ed094f241003ca4a34426f7bd53a50fd28b585c3f74d2de8b80f9a