Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd27eba066cc562…

MALICIOUS

PDF

62.4 KB Created: 2021-01-29 07:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f624c65f32240f68b055034d5f938922 SHA-1: a19a1351f587f43b9784c5b781392c6a19d5a0a0 SHA-256: bcd27eba066cc562a6fb3f57d5e9a625dcf5944707d6c11905b658851577c7ae
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jacksth.ru/aws?utm_term=biography+template+for+kids PDF link annotation
    • https://cdn.sqhk.co/buweworipoza/a9zhaif/knife_slashed_tires.pdfIn PDF document text
    • https://cdn.sqhk.co/wamobuzo/hgIiNHO/jenixosuxajoru.pdfIn PDF document text
    • https://rapofureduf.weebly.com/uploads/1/3/1/1/131164295/4637779.pdfIn PDF document text
    • http://vnatural.space/13195563921qaknh.pdfIn PDF document text
    • https://cdn.sqhk.co/bozawenibiwa/hdrUge5/mashed_potatoes_bon_appetit_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/Kjeaij0/volejupevokamazavonoli.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/hagfgju/god_of_stickman_3_mod_apk_happymod.pdfIn PDF document text
    • http://help-feedback-amzn6.xyz/49730682113lstu8.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/ghhcShc/inox_knife_price.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/bUCifhb/riboke.pdfIn PDF document text
    • https://tugoxovelosiju.weebly.com/uploads/1/3/0/9/130969774/accb6b.pdfIn PDF document text
    • https://cdn.sqhk.co/japewaturu/bD0jd7S/25100910152.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafefelanepule.epizy.com/31421523524.pdfIn PDF document text
    • http://gebibem.epizy.com/fosotovarewuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/74983442434.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_off0000b6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B0 5672 bytes
SHA-256: bab4144fdf57be0bc8492bedec343a0face9dbea20723eb0df40e735a35c6496
font_01_sfnt_off0000c9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E1 10236 bytes
SHA-256: 245732046a4bb0f0bfa8824d8f2a10194dfa5b457050a60524a91ac81db8022f