Malicious PDF — malware analysis report

Static analysis result for SHA-256 257de3236b58819a…

MALICIOUS

PDF

47.5 KB Created: 2020-08-06 21:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 089cc4b221ea2558241c87fd15626d0d SHA-1: cf082a44e29b3b33b08a57b2043a33cbfabf6d15 SHA-256: 257de3236b58819a054d36992d3014f7f44703f2bbf52b0b4dc8c35e3ca6f4c4
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body text, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting a lure for users to download a PDF.

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=biblical+aramaic+grammar+pdf In PDF document text
    • http://files.ericsbelt.com/uploads/1/3/1/6/131637570/4129477.pdfIn PDF document text
    • http://files.mintconditioncoinringcrafters.com/uploads/1/3/1/4/131437919/34ffc0ff4188.pdfIn PDF document text
    • http://files.mylunarsign.com/uploads/1/3/1/8/131857482/6fcae3.pdfIn PDF document text
    • http://files.dtdance.com/uploads/1/3/0/8/130814861/nupopovexar-nutukadewigid.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/1/0441/1644/3288/files/dexemukuluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/8819533528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2529/1671/files/74901192988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/pride_mobility_scooter_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/77941894293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/papibibazumezotibameloxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/jewikavenedir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/72999560576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/jafusofoxuxeralal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/144473931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/ladajomupesasafasuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/nowevalazimojuliturozibof.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_off00007965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7965 5488 bytes
SHA-256: baef56ff2c70b0e4f86f8076139ae0080c1e6581aa345f888122914f71f07e57
font_01_sfnt_off00008bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF8 10964 bytes
SHA-256: 988433fe64a1839e2b6e078cb9d5153344f908d92a464dd90c220e3d15ef1945

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