Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5db9f7dda37b60…

MALICIOUS

PDF

51.0 KB Created: 2020-09-18 00:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73485c0546feec230b1ef8688706f1d6 SHA-1: b73dd3cfbe8b3dbaccbd2b4932837c81e846274c SHA-256: ce5db9f7dda37b6026e346f41f792e7a12c2c3f921d0265a443bce885957c31f
184 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links redirects to a known malicious infrastructure at 'ttraff.club'. The document body, though partially corrupted, contains text related to 'Amplificador audiopipe apk-5500', suggesting a lure for potentially unwanted software or phishing. The presence of numerous external PDF links indicates a strategy to distribute malicious content or redirect users to phishing 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=amplificador+audiopipe+apk-5500 In PDF document text
    • http://files.anammourao.com/uploads/1/3/1/6/131606874/55b1ceb032f4.pdfIn PDF document text
    • http://biludiwaz.inspiringinns.com/uploads/1/3/0/9/130969656/1427980.pdfIn PDF document text
    • http://files.projectveteranaid.com/uploads/1/3/0/7/130775506/a3499c.pdfIn PDF document text
    • http://tibod.mosaicdownsyndrome.com/uploads/1/3/2/7/132712324/domamavur.pdfIn PDF document text
    • http://files.reedhendersontrust.org/uploads/1/3/0/9/130969551/masilegevesogere.pdfIn PDF document text
    • http://files.datapoints.org/uploads/1/3/2/8/132814544/5413497.pdfIn PDF document text
    • http://sokev.emw-d.com/uploads/1/3/0/8/130874429/koteluguxu.pdfIn PDF document text
    • http://files.joshuakabbott.com/uploads/1/3/1/4/131453114/9925237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3a9dfe3e-5566-4082-8e53-1a0eadf0ac1f.filesusr.com/ugd/0010c8_daa10ffd897747c3b6bf97b90b9d566f.pdf?index=trueIn PDF document text
    • https://222901a6-7f11-4277-a4a6-eee75104df28.filesusr.com/ugd/1d64af_f3f0b63e2bf64d2ea1e47a79ce421b6c.pdf?index=trueIn PDF document text
    • https://2057a6a2-da8b-41eb-a9ac-75a529ee0f7a.filesusr.com/ugd/6c032c_3d9171b221c54b75a58844494f2fe93d.pdf?index=trueIn PDF document text
    • https://2efb58db-d0b0-4dd7-8f75-885e7f2648b5.filesusr.com/ugd/e3ff21_77ff1af2f88448b9bc1d321551faa847.pdf?index=trueIn PDF document text
    • https://d70c7f79-7652-43c6-91c7-4e62e502fe0c.filesusr.com/ugd/c63dba_d03e48711a42493892a7a195784729bf.pdf?index=trueIn 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_off00008623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8623 5476 bytes
SHA-256: f5f9858ebd7dee59cc362d24e5604a34c3eb2e3a79efaf118c16b3b2565fd7e3
font_01_sfnt_off000098ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BA 11240 bytes
SHA-256: 59f0aecdacd9397b5bcf90e8fad6148a45022b775635904813662466f7f25ea9

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