Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0a81a07bdcef86…

MALICIOUS

PDF

33.7 KB Created: 2020-08-01 18:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f369556dfe9114ed5b58556f3f4a7411 SHA-1: f306861c945446c47b63800cd0d53cc4c22625f5 SHA-256: 2c0a81a07bdcef86ff4ff5e187c023c6818c97da86782d0d4e4152da64130da6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is a redirector that appears to be disguised as a lyrics page. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to obscure the malicious intent through a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://ttraff.ru/pify?keyword=god+damn+you+re+beautiful+lyrics In PDF document text
    • http://files.nationalparkswithkids.com/uploads/1/3/2/3/132303181/542768374d.pdfIn PDF document text
    • http://files.streetbeatzdj.club/uploads/1/3/1/3/131383444/topejukujapodika.pdfIn PDF document text
    • http://files.edinburghcorporate7s.com/uploads/1/3/2/7/132741397/7d02e.pdfIn PDF document text
    • http://files.apkzebra.com/uploads/1/3/0/9/130969061/rijebikiwupudowoke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/71870090758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/97629220152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/34622449062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/vomifezufabide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/4624109368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/73729721496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6554/0759/files/26884463830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/14473028108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4172/files/lizonezonipetuzujadeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/61819181107.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
🗂 Part of campaign: edinburghcorporate7s.com 4 samples

Related samples 6

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_off0000494c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494C 5440 bytes
SHA-256: 9cd6ed6ff4725ae400ce1aa0245c8ddb1f8e454cc7204bb09ddc8b052236956e
font_01_sfnt_off00005bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC3 8844 bytes
SHA-256: 7d4a6dd6446272de3d315961ed11ce26c9180e5e33688f4689e1899dd3028fd3

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