Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c497ce6de852109…

MALICIOUS

PDF

71.6 KB Created: 2021-02-14 17:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5bcbd64994822ce4d8be76b558b1d00d SHA-1: 566222a5a0fa5e90dbac4605cb0bb16ae8f17676 SHA-256: 0c497ce6de852109b9682e10725c7c4f763d6e05958cdabad6484ea123b539cc
244 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
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=tommaso+imola+bike+for+sale In PDF document text
    • https://cdn.sqhk.co/ludafojebi/Fiidtna/sapelojelurijif.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/gf6hbif/griswold_christmas_house_mickleton_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/furaxofir/bk6ijhi/zixuzuvosuparir.pdfIn PDF document text
    • http://esmoney.site/nivolekuwogor8qw.pdfIn PDF document text
    • http://instapriz.online/jovafaratulazamagamruec3.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/fhiRegj/rush_hour_racing_apk_android_oyun_club.pdfIn PDF document text
    • http://eurostore.info/mivonukudim0e4mg.pdfIn PDF document text
    • http://mikrotikwizard.com/20710310880kizz7.pdfIn PDF document text
    • https://fabupegux.weebly.com/uploads/1/3/4/6/134689396/bukesivipiwaxivowu.pdfIn PDF document text
    • https://cdn.sqhk.co/muditazu/ijYrhiq/nifoz.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/ghhbxbN/pibiseke.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/gghjdhb/dixaweposigoretirun.pdfIn PDF document text
    • http://fineagencyy.com/napenakumvwvt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xetojawik.epizy.com/37414612206.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_off0000dc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC64 5068 bytes
SHA-256: b753d66e67443273e32c2711bc00cccf45011c2ea19ecc8013ab1acae0def378
font_01_sfnt_off0000ed85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED85 10420 bytes
SHA-256: 547900f751e94d0f79a6d66ef5bfeeeb1bfb4af0b59b77733e1626533f941c50