Malicious PDF — malware analysis report

Static analysis result for SHA-256 250d305c5532d469…

MALICIOUS

PDF

41.3 KB Created: 2020-07-28 08:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c9831485d3bb04f60bcb336c07bff9b SHA-1: 82bffd5c57c0d2aa3907c00f5dba10a6bf4d24e7 SHA-256: 250d305c5532d4694768bad5d2b1c63205cd16d1c672da20cbf7bb7ee709c1d0
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links points to a known malicious redirector, ttraff.cc, which likely serves as a gateway to further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated.

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=prepositions+exercises+with+answer+key+pdf In PDF document text
    • http://files.jethartcallantsfestival.com/uploads/1/3/2/6/132682640/bokoga-nizorozagegojak-gusegunote.pdfIn PDF document text
    • http://files.maltesemanor.com/uploads/1/3/1/3/131380158/fb4fe2d1.pdfIn PDF document text
    • http://files.ponahealth.com/uploads/1/3/1/1/131164519/vesatoserudebekipap.pdfIn PDF document text
    • http://files.willycosmosguidetohotsprings.com/uploads/1/3/2/6/132682723/9d2a0.pdfIn PDF document text
    • http://files.spiritwalk.info/uploads/1/3/2/8/132814990/zoguwidis-ritoputabese-zanuzizuriwiwa.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/1/0437/6199/1841/files/51852552754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/42599818320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/9665389815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/3595828678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3626/2050/files/muwivifid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/neputap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6927/5286/files/parixufufoxabenavebabozul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/47533730944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/fovepozidoduzutit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/xidatufexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5602/files/275037454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/mexelejorulixovonatipel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1113/5894/files/mekamotatoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/31336987044.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_off000061a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A5 5328 bytes
SHA-256: e084fdffc489c7a926c8c8a6d10743bc96258987a657a06f318c9201358e21dd
font_01_sfnt_off000073ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 10500 bytes
SHA-256: 902f2aa49db51f7b44a6a8d8ab545da7cc061ca89990352aadd8b3f9475f7b89

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