Malicious PDF — malware analysis report

Static analysis result for SHA-256 a413454be52a130f…

MALICIOUS

PDF

71.8 KB Created: 2021-01-15 23:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 536ceaeb4f6177c5595dccf9187c4d7e SHA-1: 9f529aa93c778913f217342a549890ee6f3953f0 SHA-256: a413454be52a130fc6ce783059e451886b171dcd448893e163f485004a0aa1bd
244 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
  • 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://traffmen.ru/wb?keyword=capitalism%20vs%20socialism%20vs%20communism In PDF document text
    • https://welirupew.weebly.com/uploads/1/3/4/6/134662060/domatugalawalu_pubajokifo_nojuva_gugitamelodoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_5f8a5570958fe.pdfIn PDF document text
    • https://site-1231318.mozfiles.com/files/1231318/corel_draw_x7_keygen_crack_working.pdfIn PDF document text
    • https://pajowivi.weebly.com/uploads/1/3/4/9/134904739/kewivegokikatimokoz.pdfIn PDF document text
    • https://site-1166749.mozfiles.com/files/1166749/66194700887.pdfIn PDF document text
    • https://gukujevanedin.weebly.com/uploads/1/3/5/3/135344472/wamiguwazu.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/Xjdihgh/25843192845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385648/normal_5f98681f25281.pdfIn PDF document text
    • https://luxufaxunixepu.weebly.com/uploads/1/3/4/5/134584211/b9fbf4ea69d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_5fc1b964cc0a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469101/normal_5fda63509ba62.pdfIn PDF document text
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/d56b41b.pdfIn PDF document text
    • https://site-1196452.mozfiles.com/files/1196452/incineration_clean_air_act.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465396/normal_5fa67160cd390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449193/normal_5faba738b3b32.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3A 4948 bytes
SHA-256: 87d90451df0102e1f6331e9ba0121bf392e2204807e33fdb96694769fd0001a0
font_01_sfnt_off0000ef01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF01 10436 bytes
SHA-256: 2a40b44d4d2f132ec4140f64556cc32e26e88918e206b9d59827758bb0bab6e8

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