Malicious PDF — malware analysis report

Static analysis result for SHA-256 571e91ed87800407…

MALICIOUS

PDF

48.0 KB Created: 2020-09-10 10:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ccf8580c0568a55dff77bdf3ea73b39 SHA-1: 20a45e1a08a8c2c8886e75ce76731b2bbd0315ad SHA-256: 571e91ed878004071bc927b4b688c39efab9dcd308a474b884953305aa19114c
184 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of these links, 'https://ttraff.link/wix?keyword=aunty+no+1+song', is flagged as a known malicious redirector. The document body contains obfuscated text and URLs, suggesting an attempt to lure users to malicious sites. No scripts were extracted from this sample.

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.link/wix?keyword=aunty+no+1+song In PDF document text
    • http://vozatazi.agelesstalent.com/uploads/1/3/0/9/130969953/ec288197761e4.pdfIn PDF document text
    • http://jimefux.angeliquecatallo.com/uploads/1/3/1/4/131437987/5215890.pdfIn PDF document text
    • http://firete.bethanykris.com/uploads/1/3/2/6/132683228/moboluw.pdfIn PDF document text
    • http://files.learningladderduxburyvt.net/uploads/1/3/1/4/131406688/nugozafopa_bobowo_simexosat.pdfIn PDF document text
    • http://vaben.dog-gonefancy.com/uploads/1/3/0/9/130969742/9126038.pdfIn PDF document text
    • http://files.scottdouglaswilson.com/uploads/1/3/0/7/130775215/8304137.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/1/0430/6416/4506/files/zobava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5404/6111/files/89824378266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/wigisukubebamobipovufuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/criminal_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8562/5499/files/75101126537.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ee4d88_ad354c45f81a40b08b264f8ea88ae10e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8c0452be10fc494bbbe4d85771ffaf5d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3a38e0_5aa679e223b8444693a4843b89f6e102.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7ff653_0587d7f8b0f24ba7b3df704c6cc6fd98.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c0fca2_710101b64daa4def90c13deb93bbac08.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 4

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_off0000774a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774A 4660 bytes
SHA-256: 6da00f8b71eb9692785ae7653eee47d460754cdb604695895068d58538006e7a
font_01_sfnt_off00008753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8753 14008 bytes
SHA-256: 03f9333ebe05953d54039d2258e23e23dbda2a80e3847eb164ad2e9a646615ea

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