Malicious PDF — malware analysis report

Static analysis result for SHA-256 339b0fb1c9ccf2d1…

MALICIOUS

PDF

80.0 KB Created: 2021-05-22 18:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 11bbc65d1a537cfbcd303351c8515514 SHA-1: 20e3f45d83ae1d5289c36839d6de3fe8ba5ddc88 SHA-256: 339b0fb1c9ccf2d14c466ccb8c45db40f5cbf6116c13ebbd346b1087e7049714
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://fokemale.ru/strik?utm_term=space+wolves+codex+8th+edition+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498678/normal_604f6b1ab28ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380076/normal_60016c1a33d03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391920/normal_5feb3a4ed787c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462046/normal_5fd645d9866ec.pdfIn PDF document text
    • https://boxizegovabore.weebly.com/uploads/1/3/1/3/131379280/6067002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5fd6593d5bac7.pdfIn PDF document text
    • https://ferutijuze.weebly.com/uploads/1/3/1/8/131856408/gagago_timimagedo_tusipatikesim_jajaziw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471238/normal_5fc8e63bef450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_6067f4b420535.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415748/normal_5ffcb691020fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424330/normal_5fcd426b0574b.pdfIn PDF document text
    • https://jujarodi.weebly.com/uploads/1/3/4/5/134507231/piloxokek-zusenobalijotab.pdfIn PDF document text
    • https://womominajarizu.weebly.com/uploads/1/3/5/3/135392323/kidarovefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425760/normal_600d887c68507.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415052/normal_5ff1c015a587f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_605f9bfe4739d.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/kudefem/51659312192.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/93157886963.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/risk_probability_and_impact_matrix_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/anything_goes_musical_script.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/fdot_cost_estimate_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/noticias_sobre_problemas_ambientales_en_mexico_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/66545449711.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/tatok.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/flagstaff_arizona_10_day_weather_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF928 5664 bytes
SHA-256: 2fe111bdce49eff3d11b5f85f000af787b6db8607c7eb0169883abfd29a8550b
font_01_sfnt_off00010c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C89 11064 bytes
SHA-256: 36c7b981627abffed25cbd94900cfaae90a629191030d8379b8ef23962159e50

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