Malicious PDF — malware analysis report

Static analysis result for SHA-256 59744ddc3c535783…

MALICIOUS

PDF

71.3 KB Created: 2021-01-06 11:35:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c0d148c897a61df99ae8ce00a3f5242d SHA-1: afb0b3e8045ec3c9b9a5a0e01aad88a60a02cbc0 SHA-256: 59744ddc3c535783f57cbd489c24d507209fdc2307c14188503fcc94f44049f7
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The document contains a large number of external links pointing to various PDF files hosted on disposable domains, suggesting a link farm or SEO manipulation scheme. The presence of these links and the nature of the hosting indicate a potential distribution vector for further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=ariana+grande+2019+songs PDF link annotation
    • https://vasinurevesodux.weebly.com/uploads/1/3/4/6/134605286/xenim.pdfIn PDF document text
    • https://tebixuku.weebly.com/uploads/1/3/4/5/134595315/3cafa46ce.pdfIn PDF document text
    • https://malavaxun.weebly.com/uploads/1/3/4/0/134018228/6910925.pdfIn PDF document text
    • https://cdn.sqhk.co/povewepalu/1SfjjRd/50085050193.pdfIn PDF document text
    • https://kizulivuvuruzor.weebly.com/uploads/1/3/4/8/134850547/6534570.pdfIn PDF document text
    • https://wifamiwipefap.weebly.com/uploads/1/3/0/7/130738562/d4dc321a9058da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5fa0df008125e.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/lubawozeranowazaj.pdfIn PDF document text
    • https://jobuvurivoko.weebly.com/uploads/1/3/2/6/132681743/14bc1d.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/gR2gdjh/moksha_bellevue_yelp.pdfIn PDF document text
    • https://gidexexururetus.weebly.com/uploads/1/3/4/5/134505918/3025957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408187/normal_5fc32668805ab.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/hKgiShb/28466798387.pdfIn PDF document text
    • https://cdn.sqhk.co/jeposanop/igVpRNH/62442659896.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD875 5432 bytes
SHA-256: 507730afdc35a0beed2a222d11ae30b2d255ccd0b172740e4b588a3b6ba21c90
font_01_sfnt_off0000eafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFB 11132 bytes
SHA-256: 66d99821ec4b1184fbc2c131ff914ab52574feb8a490816d0c3a1625d476bd9c

Open this report in the interactive analyzer, or submit your own file for analysis.