Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ae3c827eb8f6ae…

MALICIOUS

PDF

44.1 KB Created: 2020-08-02 22:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b522a4fc24fbf1e1b5aea18f5ea7767 SHA-1: f0d89120e97093d3655ca66d46a9141af12293f3 SHA-256: 92ae3c827eb8f6aeca75ff8779d68032b22d8de1d02d0960994e9e665e445b74
194 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, many of which point to a redirector service. The heuristic firings indicate that this is a malicious redirector link farm, designed to lead users to potentially harmful content. The document body itself contains garbled text but also includes the URL https://ttraff.ru/pify?keyword=proximity+sensor+android, which is identified as a malicious redirector.

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.ru/pify?keyword=proximity+sensor+android In PDF document text
    • http://files.heartpieces.net/uploads/1/3/1/3/131379749/3776242.pdfIn PDF document text
    • http://files.furkidsboutique.org/uploads/1/3/0/7/130738845/ribebili.pdfIn PDF document text
    • http://files.coachminda.com/uploads/1/3/1/4/131406258/sefutukotuzodop_nekukak_folipumafo_wejerutivarum.pdfIn PDF document text
    • http://files.distinctdancecenter.com/uploads/1/3/0/7/130739369/visokikowukisu.pdfIn PDF document text
    • http://files.cultivacultura.com/uploads/1/3/1/4/131453684/dejusakak-tijixaz.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/1/0433/9544/8997/files/jevamebisaduwevanoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/form_8379_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/33238460965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1994/1541/files/26900325699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/tozanisumapojijowusun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/41045578118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/37938452303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2643/9582/files/sujumujusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/roleti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/nokup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/54466808018.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 5108 bytes
SHA-256: 4568b466961c93424eda9d873144be47796930421857926d64bb1ad5aacc673d
font_01_sfnt_off00007757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7757 2044 bytes
SHA-256: e8def34ef7fa1cd1e737aa53281a1ad4be732a20e453453846aa670fb207f4af
font_02_sfnt_off000080c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C4 10128 bytes
SHA-256: d04b21058a9ee597721ff78e51bf71e4f49defdd06d0a7179b98afddd9ee58a5

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