Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a5a2250612ffd78…

MALICIOUS

PDF

34.2 KB Created: 2020-08-12 05:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f32a3766821b1ab7e2c261d0337161ea SHA-1: 28a846fae05f6e75b353ab396497705ae6139884 SHA-256: 0a5a2250612ffd78d14e3b840dca6b394dcd9e337916e59313a6b898ae3f1eb0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) identified as malicious. This suggests a link farm or phishing lure designed to redirect users to potentially harmful content. The presence of a malicious redirector link and the ML classifier's high confidence score indicate a malicious intent, likely to lead users to a phishing site or malware download.

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=oxford+phonics+2+pdf In PDF document text
    • http://mukuroxam.averagejoespodcast.com/uploads/1/3/2/6/132682883/xalaboba-mojivazaku-sefez.pdfIn PDF document text
    • http://files.idahocid.com/uploads/1/3/0/8/130815228/vitotevu.pdfIn PDF document text
    • http://putug.sloanesquarehotel.co.uk/uploads/1/3/1/3/131383483/3387660.pdfIn PDF document text
    • http://files.michelletockyork.com/uploads/1/3/1/3/131379946/fenubugimedabakito.pdfIn PDF document text
    • http://ruvizek.fortwaynesuzukistrings.org/uploads/1/3/1/3/131398367/busenutomadumo.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/1/0433/3377/9611/files/potudakunedapajedux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/12414486026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/fnaf_2_demo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1892/7775/files/56251548169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/saxose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/24753988791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/gugigujojepoxuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/tojilemud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/96320734362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/85298507427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2980/6759/files/wanedutorinususapafew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/giluzokamukuwetiweveva.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 4

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_off0000496e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x496E 5228 bytes
SHA-256: a8d3971e724435022b405213c6c5c3e319aa573d81df330e4c3a11cffe784234
font_01_sfnt_off00005b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3F 9620 bytes
SHA-256: c21cd5af3917f1e626574b5052f76266672e29af42e27dbec2d1a8facdd7a684

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