Malicious PDF — malware analysis report

Static analysis result for SHA-256 998430d395ac061f…

MALICIOUS

PDF

48.8 KB Created: 2020-07-30 07:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f7206d95343fa61a7f4947f8af19d49 SHA-1: f05817cd5de115e82256ebd800ce0a0da4176b02 SHA-256: 998430d395ac061f7494378f2a926b3505f02bd715ec3af90ee9082ebd36d12a
234 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is associated with malicious activity. Additionally, it includes a large number of embedded links to PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or distribution. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs the user to copy and paste content into a command-line interface, a common tactic for executing downloaded payloads. The document body itself is heavily obfuscated and appears to be junk data, but the presence of the URL and the command lure heuristics strongly suggest a malicious intent to trick the user into executing commands.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=adobe+premiere+cc+tutorial+pdf In PDF document text
    • http://files.crossplainsdental.com/uploads/1/3/2/6/132682030/votonagaxak.pdfIn PDF document text
    • http://files.incredibottle.com/uploads/1/3/1/3/131383548/34658f70a74.pdfIn PDF document text
    • http://files.stjameshaubstadt.com/uploads/1/3/1/0/131071056/mibofotoxezufejunano.pdfIn PDF document text
    • http://files.hazletontrinityschool.com/uploads/1/3/2/3/132303010/88c7835e7e.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/1/0429/8833/9361/files/gubevugovowajuturov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/xefox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/12417328616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/xekerenijigefeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/28814990918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/97109634985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/voxuxaxafago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/zobunenarowadusagipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/vaxonalulojureme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6876/5848/files/63275630882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/89867256479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16481260084.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 5028 bytes
SHA-256: c44dfbd9e4ad6338d5d7cd5105839ca17044ed4418c7b747dc0315e3bb79dca2
font_01_sfnt_off000087c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C8 15004 bytes
SHA-256: 87da2827caad006acf728413b044e200e092d96fa2cba59a9353f674e1323eac