Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c58653b33890655…

MALICIOUS

PDF

76.4 KB Created: 2021-01-24 22:27:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fda9a4c56386a1bf1e36be1dc756c417 SHA-1: e1ebbac47d562433ad789237afd7c3993eac25fe SHA-256: 3c58653b3389065590195c908aded9c23a436f96a0e78e39a3f4a0a5572563ad
186 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 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://maypoin.ru/123?utm_term=alfred+weber+least+cost+theory+pdf PDF link annotation
    • https://cdn.sqhk.co/vinasujitupe/gj5agdE/54117365982.pdfIn PDF document text
    • https://cdn.sqhk.co/rujuwawuju/02KoBgd/hoggy_2_jar_48.pdfIn PDF document text
    • https://bomoturu.weebly.com/uploads/1/3/1/3/131384468/bd86af.pdfIn PDF document text
    • https://bizavurodetilu.weebly.com/uploads/1/3/4/3/134391156/2354363.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/g6ja3je/marketing_strategy_consultant_job_description.pdfIn PDF document text
    • https://dolufinome.weebly.com/uploads/1/3/5/3/135330980/3130533800b37ee.pdfIn PDF document text
    • https://zedimubaxujejit.weebly.com/uploads/1/3/4/7/134715534/9044479.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/lhaxEPD/19850964299.pdfIn PDF document text
    • http://ottics.ru/argentina_football_jersey_20204t5v8.pdfIn PDF document text
    • https://cdn.sqhk.co/gixixutiji/hjcgdMB/the_solar_system_song_lyrics_youtube.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/negonanopix/49950087897.pdfIn PDF document text
    • http://xagewozutuke.epizy.com/composition_of_blood_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/80575209036.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/hallelujah_chorus_staff.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/15518721099.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_off0000eb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB92 5568 bytes
SHA-256: fe9af9cdf4aea69870fbc0f40f0e83fc08f96d55e8c3ce987586c2d1474badcb
font_01_sfnt_off0000fe8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8F 11556 bytes
SHA-256: ba8dccd198d32fcd06e145ac17ed1aadc5eada1b21eef566caaf742c461d63db