Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0555a817315433a…

MALICIOUS

PDF

41.5 KB Created: 2020-09-13 16:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 015116197a76ef746a78e58899e0cb4a SHA-1: ffa74c9e9a4ae95512e609d36cae05d2374aa4f7 SHA-256: f0555a817315433a9c20b273f78ecc99a90d21cfd338aad756c3a873fb386585
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a malicious redirector. The document body, though malformed, contains text related to a 'Samsung cell phone extender manual' and includes the malicious URL, suggesting a lure for users seeking information. The presence of a link farm further supports the attack pattern of directing users to potentially harmful sites.

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=samsung+cell+phone+extender+manual In PDF document text
    • http://files.cattlekinginn.com/uploads/1/3/0/9/130969695/govojunizos.pdfIn PDF document text
    • http://lenojelu.bearsportswear.co.uk/uploads/1/3/0/8/130874493/wipaluxo.pdfIn PDF document text
    • http://files.shadylanefarm.store/uploads/1/3/1/4/131437953/materef-raxawubilosabik.pdfIn PDF document text
    • http://files.herveybayorchidsociety.com/uploads/1/3/0/7/130739802/vatijedevaz-tumopewerusod.pdfIn PDF document text
    • http://files.charleybearproductions.com/uploads/1/3/1/3/131380786/4888295.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/1/0433/0687/7080/files/97072231683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4547/7800/files/67697106419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5619/1893/files/spreadsheet_software_ms_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1110/files/craftsman_179cc_snowblower_manual.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4c7633_17b8893de24b4aa1a9d177c93ef1fadc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d13e1f_b100c36934064bc2810f57c8ddb0279e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/85d67f_25772212925f442e930466e476a0526d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c2007e_1b3621c7f178412f9f3c4a30bbc1010e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_5275b60d53e04940a0f0ca0851ebc307.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2e4eb4_8f41bba717544cfc86a9a8ce294b0076.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 5

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_off00006348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 5656 bytes
SHA-256: 3b93ed2450760f7932b5fdfe3e295a24ad1cd2cd48521e581d60ff0c8a197a5c
font_01_sfnt_off00007665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 10468 bytes
SHA-256: a5c6931353bddf7da304fecfe22533c57608df02f16a6614ae166130e9baf885

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