Malicious PDF — malware analysis report

Static analysis result for SHA-256 015f3496b6675b6c…

MALICIOUS

PDF

67.4 KB Created: 2020-11-19 03:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 387616594052101a8534c62d3c340dbf SHA-1: 24194b3a392b9ef1cd5741a068f17e150b28eb49 SHA-256: 015f3496b6675b6cd785895713d308a9b5e34b91705990cc1cef2b93174334aa
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://trafficel.ru/aws?utm_term=finding+slope+intercept+form+from+two+points PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463803/normal_5fa4e2855b05b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_5f9610740bdda.pdfIn PDF document text
    • https://didipovewefof.weebly.com/uploads/1/3/4/3/134306756/4aeef50294e17a6.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/kubafezin/lisiwupenimazusobude.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/41051075132.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/across_the_stars_guitar_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/xutijukupepidobolopenur.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/bluedriver_automotive_multimeter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/brockton_district_court_probation_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/potato_sack_race_bags_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/97097234351.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/vuxuxikipomowobusisokiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/warekof.pdfIn PDF document text
    • https://s3.amazonaws.com/jaburirarov/infinite_campus_parkway_west_high.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_off0000ca27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA27 5312 bytes
SHA-256: 5b20c5c9893064dca57d0e2d0dd432e5d8a6955d978bf04614d8fd9a14f5d54c
font_01_sfnt_off0000dc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC41 10568 bytes
SHA-256: 8d8547b52c701d16bc0c11ce5190c6d0da210b0e9900a3a33a17797e2643d234

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