Malicious PDF — malware analysis report

Static analysis result for SHA-256 5547bee113f09194…

MALICIOUS

PDF

66.2 KB Created: 2020-11-11 14:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9bba9b2be9df9577285936c0d43d3397 SHA-1: 9411a3c133f1c2b48b5fb9218d7ea510ebe82a57 SHA-256: 5547bee113f091949f8c6c6af5b2b8598490742f3d7928eedf33b937368fbfda
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable hosting services, indicating a link farm or phishing lure. The presence of a URL related to 'google email tracking pixel' suggests a pretext for phishing or spam. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malicious content.

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.
  • 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://traffine.ru/123?utm_term=google+email+tracking+pixel PDF link annotation
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/e13387a.pdfIn PDF document text
    • https://fomezesas.weebly.com/uploads/1/3/4/3/134343882/7c7baa.pdfIn PDF document text
    • https://sagotudiwesuw.weebly.com/uploads/1/3/4/3/134340488/5492236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460708/normal_5fa8cb2385167.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/dc30e00f25d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451757/normal_5fa7f9280b0ab.pdfIn PDF document text
    • https://zuxubemusaf.weebly.com/uploads/1/3/1/4/131453996/jazuwuzijimij-jupigofikulagev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5272c64a-f408-415d-a550-9d093c8d6c3b/fifty_shades_darker_pool_table_full_scene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc60463-350d-42e6-ac3c-98c4c83d69a4/mage_equipment_guide_ragnarok_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/25982169588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05f4a23-2c05-44ed-a870-a2104bc569a2/52091987261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19577ac-c269-4dce-a136-ecd8019a8e63/darov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d303f2c6-5595-4643-abc0-19e808a4783b/vegidepofeti.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/university_of_hawaii_maui_college.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4baba97-18f1-4404-922b-0b3751d2a8dd/histotechnology_a_self-instructional_text.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

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_off0000c5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E3 5236 bytes
SHA-256: 1a1a19cb51f8b71fd6dea338aca851db0020bb101406d255dec52ce6143f4ac7
font_01_sfnt_off0000d7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A9 10672 bytes
SHA-256: a5e0d71fb532fbba49c83867f53c55500aa05b8a7a1c9c108539e50f1401da99

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