Malicious PDF — malware analysis report

Static analysis result for SHA-256 069701527f780b31…

MALICIOUS

PDF

69.8 KB Created: 2021-02-02 12:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f02f816e328c80eee390461c29163a64 SHA-1: 2b9108c565fe44957b4c95c65ef8ecb839028170 SHA-256: 069701527f780b31673029e31799b719153cd904365525c353e2125c7cbbc575
196 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.
  • 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.
  • 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://druttle.ru/aws?utm_term=air+cadets+uniform+rules PDF link annotation
    • https://cdn.sqhk.co/gasariba/ujhdcie/busukesawepite.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/hhghOjh/kogaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427828/normal_5ff3b61ba7335.pdfIn PDF document text
    • https://cdn.sqhk.co/polidupokasu/JuibjeI/zombie_cure_virus_fighterz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391925/normal_5fd03f182ac9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403537/normal_600662674e626.pdfIn PDF document text
    • https://naferukogewoza.weebly.com/uploads/1/3/1/4/131406713/wigebigobes_fologudo_pebifatej.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/bibPihh/2424896031.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/9cXbqnw/bipereguzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410695/normal_5ff46f68354d0.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/mjfiegQ/who_all_dies_in_the_outsiders.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/bibejovixapis/best_paid_tower_defense_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/kedawin.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/70204216632.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/crazy_arcade_bnb_apk.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_off0000d5fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FC 5156 bytes
SHA-256: 6dedb7f36d40b5f4ed7600e9b63cf1aaa88c91b58e8d87efedce792122d7107c
font_01_sfnt_off0000e773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE773 10300 bytes
SHA-256: 1a1831545add4a12f7f11c94e66cb7f4d90b2c0e402876bde1391096ae9817b5