Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a76cf93f7b875aa…

MALICIOUS

PDF

66.0 KB Created: 2021-01-09 09:56:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4ad45f8f405e4db3250e3a009fe58815 SHA-1: 95d8c62ed038ebb69f509a7b43752e525b901a58 SHA-256: 9a76cf93f7b875aaae31a5c87ff6beaf076dd3811d193774d1f09b579381ad65
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, suggests a lure related to a product sale, likely intended to trick the user into clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/123?utm_term=full+body+umbrella+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404297/normal_5f976968b9e2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f9f5fec4a34b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421339/normal_5ff8ee082bcc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368223/normal_5fcd5e802a009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459623/normal_5fb2598ecb491.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402280/normal_5fc766af12b1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480402/normal_5feee700b2f79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411231/normal_5fc4b85a39169.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/6d25dcfa-1260-4883-9bde-e2caf64d48aa/8359710763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cfca66c-b88c-4b01-901d-abe2fe39405f/41270408151.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/pebonajalegi.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/palapo.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/brigitte_de_suede.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/don_t_you_wish_it_was_true_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/hacked_pixel_gun_3d_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/82586061162.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/procs_verbal_assemble_constitutive_association.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 3

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_off0000c482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC482 5248 bytes
SHA-256: 1ef527f0031f1825a4e39e7efde7d8318148c8cce1aa107bad150f5d110e7825
font_01_sfnt_off0000d648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD648 10924 bytes
SHA-256: 14ee047d746f15852967c027836046c0ac73cc1711cac9d55a2938879922d12b

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