Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d9983e51cac61a…

MALICIOUS

PDF

33.1 KB Created: 2020-08-24 01:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2dc01b1a36511e9e911e1296ef4d65fd SHA-1: fd0b415a8bb34453aa3c5a70d898571f54d0c86e SHA-256: 56d9983e51cac61a1eb308f1febd9d7912d18c16372ceda370a8105de023e39a
202 Risk Score

Malware Insights

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

The PDF file contains a lure for 'Hd car background photos free' and embeds multiple links. One critical heuristic indicates the PDF links to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=hd+car+background+photos+free'. Another heuristic identifies a PDF link farm, with the first URL pointing to 'https://cdn.shopify.com/s/files/1/0432/7584/5792/files/megexirifuvinefuje.pdf'. The document body, though heavily obfuscated, contains these URLs and appears to be generated by wkhtmltopdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=hd+car+background+photos+free In PDF document text
    • http://files.tepeetonka.com/uploads/1/3/1/3/131379940/dewemu-zadatanosaluboz.pdfIn PDF document text
    • http://files.emilyaustinphoto.com/uploads/1/3/1/4/131453574/6620216.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/1/0432/7584/5792/files/megexirifuvinefuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60527157158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/jujepezibaxijuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/printable_flyer_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/pukarawuwosediv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/lajelivome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6032/0669/files/29432007654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/pegugefofefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/1438/1722/files/81589730694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/57114141253.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_off000044a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44A4 5548 bytes
SHA-256: 3f2df6a5f843d5f18a7c12208337236a5cbc087210bdf53af40141fff44e3970
font_01_sfnt_off0000576d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x576D 9520 bytes
SHA-256: ff43394336f0d082c0fd566823158bc9e20f48ecea6d781ec0fbf7f19a0eae07

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