Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc471762f2d22ce1…

MALICIOUS

PDF

43.3 KB Created: 2020-08-17 13:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89a049477bf55f1a7ea334de986f13cb SHA-1: dd54d42b31e9c2525568b91e8a226b641f276d1c SHA-256: dc471762f2d22ce136d94645a189ba245d7b49249da25c8a715556efcc3451ed
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, with one identified as a malicious redirector. The document body is heavily obfuscated but contains a reference to the malicious URL. The primary purpose appears to be SEO manipulation or redirecting users to malicious content 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.cc/pify?keyword=confirmation+symbols+worksheet In PDF document text
    • http://files.easternsloperanch.com/uploads/1/3/0/7/130776246/tiragonisalivej.pdfIn PDF document text
    • http://files.28thmpretired.com/uploads/1/3/1/6/131606411/totatukotim.pdfIn PDF document text
    • http://files.dance4him.org/uploads/1/3/1/8/131856188/5194559.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/1/0432/6762/1028/files/xerowazuvelapozixofeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/ripujizefavudotiposefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/namuxiwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/treatment_of_pulmonary_hypertension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/biologisch_dynamische_zaaikalender_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1309/5067/files/33362032449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/90951469867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/varogugokun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/49247086868.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_off00006af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9 5312 bytes
SHA-256: 3df1191229cd524bdd23edd6bd64fa6cc41a4033a3ba0f3df1ae81f02fc2538e
font_01_sfnt_off00007cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 10472 bytes
SHA-256: 81a9bb2578090fd68a917a5f75a08c12983d1ea0a744092644a833d63a84b07f

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