Malicious PDF — malware analysis report

Static analysis result for SHA-256 19715e26d6de318d…

MALICIOUS

PDF

59.9 KB Created: 2020-11-22 05:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a777cfb8ee5e349e39ad015bef980121 SHA-1: b46add738c1aaf6a505a37d37d733865f16afcff SHA-256: 19715e26d6de318d10496c2dd03819c9cec53415663fdd95628050582c0cb301
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an embedded URI and a high-severity heuristic indicating an SEO redirector link, specifically pointing to 'https://traffnew.ru/aws?utm_term=autumn+leaves+live+wallpaper+android'. This suggests the document is designed to trick users into visiting a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffnew.ru/aws?utm_term=autumn+leaves+live+wallpaper+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5f90a87ce09aa.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/bavolugo.pdfIn PDF document text
    • https://valaxekujabe.weebly.com/uploads/1/3/4/6/134653377/81de8fba1365102.pdfIn PDF document text
    • https://xeveguxugagu.weebly.com/uploads/1/3/4/6/134600238/rukagumut_resixodutuwot.pdfIn PDF document text
    • https://ziwopigop.weebly.com/uploads/1/3/4/3/134380455/vebofilew-gegusor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f93c290c72f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453333/normal_5fa48abc97b2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5f9c1dcd6475c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5f89a8cf91040.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388293/normal_5fb9bbe0adada.pdfIn PDF document text
    • https://lurefeti.weebly.com/uploads/1/3/4/6/134683691/demamekiwokise-razekujutib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB05C 5244 bytes
SHA-256: 585ba48d0b7cf02758bfd065238abf80b79607021ef1b82f41c8a5f874a98649
font_01_sfnt_off0000c22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22B 9540 bytes
SHA-256: a4b49bc4318be252c7ea4523993472162582ee3f5b6f7af060ed2b2b2c002166

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