Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63bb494fa85eadd…

MALICIOUS

PDF

48.0 KB Created: 2020-08-22 02:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b562bc6d1034db65169841a13d380e0 SHA-1: d68608c6aea876346bb94a8d1299122bb74c077f SHA-256: d63bb494fa85eadd980d916312affd3ca202f3ddedcd1cf4f5fc35f0e72670bb
194 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, forming a link farm. One of these links, https://ttraff.ru/pify?keyword=anderson+paak+song, points to known malicious redirector infrastructure. The document body is heavily obfuscated and contains garbled text, but the presence of the malicious redirector URL and the link farm structure strongly suggest a malicious intent, likely to lure users to malicious 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.ru/pify?keyword=anderson+paak+song In PDF document text
    • http://files.sauer-int.com/uploads/1/3/1/4/131438180/b91cff36838c89.pdfIn PDF document text
    • http://files.skeshmm.com/uploads/1/3/0/7/130774990/6850df9652b9.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/1/0428/9835/8432/files/37237973095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/70711794856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3880/1061/files/zomixakumejekurax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/medical_ethics_in_abortion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/viwubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/69920285624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/11377303752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/abn_registration_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/rirukezosekabigukefub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4136/3870/files/work_week_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/zidugoziri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0391/2098/files/pexotunufaru.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000684b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684B 5148 bytes
SHA-256: e0ed4d3d681d96c2b49b68b47cce94d36e0f76a7ad4808aa1728d082090d605e
font_01_sfnt_off000079d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D6 10576 bytes
SHA-256: 2ab123104c544030c94711cb12c0174e120a1ee3f000832d781638f245935cf7
font_02_sfnt_off00009dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFD 16060 bytes
SHA-256: 10572f3a10760712fbb8352e098d229fd21f48763f52fb6fd9385479015ceb58

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