Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bb90051036bb7d…

MALICIOUS

PDF

63.3 KB Created: 2020-11-12 18:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d19ac0195ba73a794dd07e24e1a823c8 SHA-1: 3dcc919809f8dbe1484c576b7a90b6bd7a039c1e SHA-256: 60bb90051036bb7dedecab128352e9cddf4740955d77789aca665472cdc8b15a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/123?utm_term=hoover+rec+center+jobs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_5f8fd1ae414e8.pdfIn PDF document text
    • https://nironaguvotu.weebly.com/uploads/1/3/4/5/134530025/lilob_vakusu_tawewino.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389090/normal_5f8e2f465861f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419630/normal_5f9bcc6c76531.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5faaed69a5ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8708e4b069c.pdfIn PDF document text
    • https://vilujelirajoki.weebly.com/uploads/1/3/4/3/134378771/tapuxu-dudeniwiwurem-gisax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5f895ca44bc81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_5f9a07563b69d.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/boduxatavepe/chat_room_phone_numbers.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/stardew_valley_dwarvish_translation_guide_id.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_off0000bcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCDD 4788 bytes
SHA-256: c39c5351004d2c0c244d56d38d9ce2224345cce41a4975e9196f7cdd3b060f3b
font_01_sfnt_off0000cd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD41 10420 bytes
SHA-256: 45b5400cc7a7718e1805ead52ca2152a7c5de1ad94f20102d30a8e2a26dc80eb