Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1c3a417d9e393b…

MALICIOUS

PDF

217.6 KB Created: 2021-03-20 16:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8a3676573d32d0a5b5f0d3a07e59d75a SHA-1: a9de720b8367e47bd6f7053b036b84673e625236 SHA-256: fa1c3a417d9e393ba7e6840b2f2675d1033ef6823d0b2e3ca764420e9f10fc4b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for downloading a 'Watchmen comic pdf english'. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the detection suggest it may leverage PDF vulnerabilities or embedded JavaScript to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/award?keyword=watchmen+comic+pdf+english PDF link annotation
    • https://fukituxepuronip.weebly.com/uploads/1/3/4/6/134605821/9037188.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487192/normal_5fce587f1d3dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424951/normal_602cdbc875bcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5ffcf735498cd.pdfIn PDF document text
    • https://ferijadupegol.weebly.com/uploads/1/3/4/7/134705138/jeladedudurafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491686/normal_6023ebb952ffa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_60122b596112b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450734/normal_5fc7dbe0838d4.pdfIn PDF document text
    • https://zepemotofilizag.weebly.com/uploads/1/3/5/3/135399015/dabipof-lasijudoroxadi-kinudamosivej.pdfIn PDF document text
    • https://lorebanoga.weebly.com/uploads/1/3/0/7/130738704/zemodix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494166/normal_5fce12ceb7f75.pdfIn PDF document text
    • https://pefopurez.weebly.com/uploads/1/3/4/3/134375846/ecabb915e38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489057/normal_603a72722eac4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_60400b6959fb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482009/normal_5fce344cb8eb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/ff14_fishing_guide_50-_60.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/non_disclosure_agreement_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efee2f0d-17dd-4de3-8051-dcd94822c155/kuvosatobamafawixusetefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d5362c-164c-4a82-8a6d-8ced22a6084f/vimojina.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/advances_in_materials_science_and_engineering_impact_factor_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3c93ff7-20b3-4520-84c1-f3c3506aaf3b/company_of_heroes_2_how_many_players.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/kevajodofigiririrul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d4d5738-8cc3-4886-b719-bb95999d0611/62106372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57b22a4f-cead-4069-b68e-3b461970cec3/62334252194.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/how_to_clean_a_t-fal_compact_deep_fryer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00030424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30424 5488 bytes
SHA-256: 2d34680f9afe725f56dc62076565f18ec726009085eedfa47617cc2546e29c1c
font_01_sfnt_off000316bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316BF 12868 bytes
SHA-256: 32cb77c908335ebb8772f82a2cb37a85cd0b1a2f19f181c3674275a28eb850ed
font_02_sfnt_off000341f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x341F5 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd

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