Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1ae1cadfc4ef55…

MALICIOUS

PDF

56.1 KB Created: 2020-07-29 17:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c55b6e05f3d7983e001b722fdf09a896 SHA-1: ae363fb67294db005b2cd78fc58f3d3eba077a99 SHA-256: da1ae1cadfc4ef557bcf5b83248570dce388b37c124de482816c287537dd10d4
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and heuristics indicate it contains a malicious redirector link and a large number of external links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.ru, which is known for redirecting to malicious content. While the document body is heavily obfuscated, the presence of numerous links points towards a delivery mechanism rather than direct content exploitation.

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=einstein+on+the+beach+score+pdf In PDF document text
    • http://files.thecuriousunicorn.com/uploads/1/3/1/8/131871556/bilefonamupipaw_liniva_naboroj_mutibonumaxaxu.pdfIn PDF document text
    • http://files.lachongsd.org/uploads/1/3/0/7/130775848/3342574.pdfIn PDF document text
    • http://files.amsphotographyllc.net/uploads/1/3/1/3/131384589/5c1d0dc0edb474.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/1/0428/9835/8432/files/23929268289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/dogagosaxuwuwekexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7765/4942/files/94983193109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/juxotalativasokokug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6584/files/98322189471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/89230050964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/numetodesenaveraxosad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/49782607555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/49808152266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4311/9527/files/widapokarateli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/92040288954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.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 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_off00009ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE9 5096 bytes
SHA-256: ed1b41770a5fb0584d5b009c53577a1459da61114aca62e0d2bbfaee9df14b4a
font_01_sfnt_off0000b022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB022 10192 bytes
SHA-256: 09f0b677036cdd834a4880abe7d9c59a7e2d51e26e9a399474cbc3ce9fb07094

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