Malicious PDF — malware analysis report

Static analysis result for SHA-256 3413e7125af4bcbd…

MALICIOUS

PDF

40.7 KB Created: 2020-08-09 22:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39fff74dbd404b4bd182a1c3bb1fc534 SHA-1: dd6fd0aa2ba4dfe0f26617b29a0a609d165f2548 SHA-256: 3413e7125af4bcbde8785a29cd704b8e0e4fd736f401ceeb3500acde2e40311e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a primary redirector identified as 'https://ttraff.ru/pify?keyword=pc+troubleshooting+beep+codes+pdf'. This redirector is associated with known malicious infrastructure and is part of an SEO link farm strategy, likely aiming to trick users into downloading further malicious content. The ML classifier strongly indicated maliciousness, supporting the classification of this PDF 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=pc+troubleshooting+beep+codes+pdf In PDF document text
    • http://files.toplineeq.com/uploads/1/3/0/7/130776712/dawozudugotuw.pdfIn PDF document text
    • http://files.projectpurityseeds.com/uploads/1/3/0/7/130739704/jidebanopimogas-detekub.pdfIn PDF document text
    • http://files.covespeechtherapy.com/uploads/1/3/0/8/130814258/xapovalafozusuno.pdfIn PDF document text
    • http://vuvezek.theraphaschool.com/uploads/1/3/1/4/131453060/6f6c4ac3a6e1411.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/1/0428/3557/4943/files/99763701001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/18902122043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/zutavewosip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1057/2966/files/kugoluzujariwixaxofite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/53250679934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/85283849500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/13123891526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/37752882215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovogosiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/46004560602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/wodisefikubereduzexogudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/namonufor.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 3

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_off00006229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6229 5348 bytes
SHA-256: b6a094f56e640c8d2979bc6626f27be4b1c6d57a3d305f408a9eabc8e890aebd
font_01_sfnt_off00007450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7450 9748 bytes
SHA-256: 27728d02e8dbe4b26b7b2199cb74a5cbcdf0d3dcc94729962443a0a59ee87bd9

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