Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ba1bd8b1517743…

MALICIOUS

PDF

85.6 KB Created: 2021-05-23 10:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0653a17dfde5277f11e08a81e7f26730 SHA-1: cdd36e1d2f5694966d7be4dd1a22a8d4211ca645 SHA-256: 14ba1bd8b1517743fc97dc29f806390379030151cfb40e529b5820e688fd3254
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme designed to lead users to potentially harmful content. The presence of embedded URLs and the overall structure strongly suggest an attempt to direct users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/strik?utm_term=msp+hacks+no+human+verification PDF link annotation
    • https://padikolejak.weebly.com/uploads/1/3/4/0/134042397/dafuvirozo_sugafozobar_vipavesabadixu.pdfIn PDF document text
    • https://tekagegi.weebly.com/uploads/1/3/2/7/132740997/gafiw-pinimasimeju-mojirubus-ramuditawe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_603b2d15d34e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458132/normal_5fe3bd93683ac.pdfIn PDF document text
    • https://kabulemumolitu.weebly.com/uploads/1/3/4/8/134869515/1582052.pdfIn PDF document text
    • https://jovivikara.weebly.com/uploads/1/3/0/7/130740330/nenupewipuna.pdfIn PDF document text
    • https://lolimesiwazefa.weebly.com/uploads/1/3/2/7/132712373/tiranadafuzid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_6024289c8aa51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_601bfbe6648c4.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/9624565.pdfIn PDF document text
    • https://mufewikusa.weebly.com/uploads/1/3/4/0/134042586/3798499.pdfIn PDF document text
    • https://wojaxesisitofem.weebly.com/uploads/1/3/4/7/134717171/367031.pdfIn PDF document text
    • https://milafesubori.weebly.com/uploads/1/3/4/7/134745217/73ee49e26f0.pdfIn PDF document text
    • https://nonegila.weebly.com/uploads/1/3/4/7/134702729/vilebixukakega.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414336/normal_6062b178e834d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494452/normal_5ff6b7b875cce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369317/normal_5fef9472e5973.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/b9188f3c-cc48-44d1-b16d-3fd8217bc819/gorejizitosomus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f9a546-f501-43f8-87a4-523774518ce3/mozusopabotibobame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a73e6b9a-51a8-40f1-ae23-40be6d62fc1e/diesel_fuel_injection_pump_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4af87064-7ef0-4089-8eaf-b576d74ee6e1/honda_gc190_pressure_washer_engine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b8254d-dc87-49ee-bd84-6aed4f544b68/davelomigivatuzoranide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe41ee0-e867-4c96-a41d-69ba44ae2b44/32586875502.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF973 3136 bytes
SHA-256: 3d86eb21ff5dbb2dc9b2659c3f9febef81beaf3d427fa689a0f990941025de87
font_01_sfnt_off000104a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A8 5352 bytes
SHA-256: 63fd4e4bf1d7545ef1fb376907292b6e5ac6b59390964431d05855ba99ec3588
font_02_sfnt_off000116c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116C8 14912 bytes
SHA-256: 80cd4fead29a3f98d4b872affeecc1cf90a848adba608950770721074308c506

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