Malicious PDF — malware analysis report

Static analysis result for SHA-256 037a63491a674188…

MALICIOUS

PDF

76.7 KB Created: 2020-11-11 22:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7b294577cc71d12484def18106a9b79a SHA-1: 0ba649e25e8dcea5ce1d47aa6ab9dc6a866fc037 SHA-256: 037a63491a6741881642b625fc6836b211d9d53bc9ae7c2d214388894339230b
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?utm_term=how+do+you+answer+interview+questions+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f975f4449ac0.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/d059b4cf2fc62b0.pdfIn PDF document text
    • https://lodejudimawepum.weebly.com/uploads/1/3/4/3/134350935/sixosi.pdfIn PDF document text
    • https://gejimedetudumi.weebly.com/uploads/1/3/3/9/133997730/rakekovejonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446650/normal_5fa8e41fdefde.pdfIn PDF document text
    • https://vakasuvarepem.weebly.com/uploads/1/3/4/3/134328097/1429892.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/6d6746db-78ab-4158-b84b-019f73894b71/nifoverapit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64743ac1-a953-446c-8000-c628563297e7/power_system_analysis_hadi_saadat_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/12733601071.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/emotions_faces.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/map_of_cities_in_palm_beach_county_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6173a36-a955-497d-a993-0970ec1dc21d/louise_hay_affirmations_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3038dad6-9d00-4be4-a9f8-f5ce326400ab/kafegegipowojozer.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_off0000eeb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB4 5344 bytes
SHA-256: d47b3c05202d34a116e7a8df4e76cdccf0899a0a1c2158859ae2d4734878900b
font_01_sfnt_off0001010a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1010A 10848 bytes
SHA-256: 47ff0bb93f633dce57b8d8f8e3c5260c97d3c9f730ac34e88354d7033a90261e

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