Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7278b402472311e…

MALICIOUS

PDF

42.6 KB Created: 2020-08-04 01:34:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4d4203697567ad5fbeb22de3e5767e8 SHA-1: d0d42193343e8679dc70cc4c7c6a6b244349e95d SHA-256: a7278b402472311eddde319bc309ef380f3aebad502a52e6b25fa09c5f1a769a
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adapted+physical+education+and+sport+pdf, which likely serves as a redirector to a malicious destination. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=adapted+physical+education+and+sport+pdf In PDF document text
    • http://files.perhamxc.com/uploads/1/3/1/8/131860787/3774810.pdfIn PDF document text
    • http://files.pittsburghfisherhouse.org/uploads/1/3/0/7/130738993/powowovinevedelufov.pdfIn PDF document text
    • http://files.therulesbooks.com/uploads/1/3/2/8/132815924/8889e7db04803.pdfIn PDF document text
    • http://files.smr115.com/uploads/1/3/1/6/131606111/vatalemobaka-rolemebenodalo-wegopugap.pdfIn PDF document text
    • http://files.amsetcen.com/uploads/1/3/0/9/130969061/jevijizunol-junapavamego.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/1/0433/8037/5704/files/95201917801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/vinoluvabur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/9622065904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0308/3928/files/1869565131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/voxibozojudasukuzojetirab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/37790864166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1723/0741/files/61417577201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/kerekotusologapupulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/97208168716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8764/2267/files/wonikobixiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/50151939149.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 7

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_off000065a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A9 5336 bytes
SHA-256: 4531c1811c5d537aa2fb63270ad6e14da4b8b5ea03477b040d09cfb0b27d3202
font_01_sfnt_off000077d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D2 10428 bytes
SHA-256: 5514a462dc6c995a7ef0d43daea95e58d53f54db62cf2931204d999c3bbeb406

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