Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2d69ca0117d336…

MALICIOUS

PDF

48.4 KB Created: 2020-08-22 19:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b84c17dd576fbc4540a7e29739b8e7a SHA-1: 56dfd253cd56a44aa11f69c76983876060b86cf5 SHA-256: 7a2d69ca0117d33638c7163db18f0b4452a5f721a4c939de34e9542f61471ca9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF filenames, suggesting a lure for users to download further malicious content. The ML classifier also strongly indicated maliciousness.

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=nichrome+alloy+sheet In PDF document text
    • http://zazidop.summitmartialartsacademy.com/uploads/1/3/0/7/130775075/a81646be18b.pdfIn PDF document text
    • http://files.crawfordphoto.org/uploads/1/3/1/8/131856290/walasexiw-kizenegid-dufuzurof.pdfIn PDF document text
    • http://vuvur.missingpersonsrv.com/uploads/1/3/2/3/132303354/598715.pdfIn PDF document text
    • http://files.pureessentialslightcenter.com/uploads/1/3/1/4/131407111/bogokasuwoke_dofekanil_xolivanita.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/1/0464/5493/1624/files/ladikitosemuxoxolix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/dawej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/digestion_absorcion_y_metabolismo_de_lipidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/vimokarewepijawip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/50882158401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/icloud_photos_without_icloud_for_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7011/8306/files/bugujalogutasuxibogama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5871/7087/files/bootleg_movie_sites.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_off00007090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7090 5112 bytes
SHA-256: 554b81aa2d05f599c6f0f19fafc3d83fd6ca70678df0689b317e6e9513b5bf79
font_01_sfnt_off000081cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CB 16312 bytes
SHA-256: 51faeec3e392c6b13c847cf060f8b6401307dd6dd024d17286f704d7c07dd419

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