Malicious PDF — malware analysis report

Static analysis result for SHA-256 73988440a6fd3cfa…

MALICIOUS

PDF

68.4 KB Created: 2020-12-19 15:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dc326d4ac17ee04880a7f10e8b83b2c7 SHA-1: 7427dde55b726615d62af04021f5fdba70291262 SHA-256: 73988440a6fd3cfa1609fff38b72551517f796a54b7846630b13fee291f28c94
186 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.
  • 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://traffset.ru/aws?utm_term=folder+colorizer+windows+10+free PDF link annotation
    • https://mizitixas.weebly.com/uploads/1/3/4/5/134589849/tikegewa_betobasobugox_zifozugubufuna.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://xobesatiwum.weebly.com/uploads/1/3/4/3/134359431/gaposunix-xerexokejelupa-wegibifosales.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380228/normal_5fc309fc8a734.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/kaven_lidotobin_robisud_tepefobinijowaf.pdfIn PDF document text
    • https://patekakedosejot.weebly.com/uploads/1/3/4/4/134479085/89178ffec4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489402/normal_5fc117e79bb6f.pdfIn PDF document text
    • https://jixivegeparimes.weebly.com/uploads/1/3/4/7/134749144/zepafuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_5f99c901ed536.pdfIn PDF document text
    • https://konevumi.weebly.com/uploads/1/3/4/3/134399330/263eb44b6d.pdfIn PDF document text
    • https://laputamobo.weebly.com/uploads/1/3/4/7/134763437/2842833.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/xoburarele.pdfIn PDF document text
    • https://rorenaziva.weebly.com/uploads/1/3/1/8/131871817/wabofen-gafofubeza-kolobewiwig-gapitin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc06ecff7cf8c75402886b4/t/5fcdcf036f0099009e850795/1607323396199/my_landmark._me_oracle_login.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17eeec89e1c4b8fc2a697/t/5fc320a008845d0924f058ae/1606623392451/week_33_timeshare_2020.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_off0000cda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA9 5096 bytes
SHA-256: c61e0b7e9db1cc7a40c5b249c883af8cf17f9d22fd3a777343133da992731818
font_01_sfnt_off0000df2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 10956 bytes
SHA-256: 6501fc318057bb009763038bdb2a79f9644bb343ca30c78b78b8bf753ec212dd

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