Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b76625376da9e6…

MALICIOUS

PDF

58.7 KB Created: 2020-08-17 12:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39de73fae8f6da2a87b4d7856b923191 SHA-1: b869beb0efa45a25073900e6444dc5725b67a025 SHA-256: d5b76625376da9e6397d958fd65f6ca2b8b7ad953e1e4b23ff54dd21862846a0
202 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 Shopify domains hosting other PDF files, suggesting a link farm for SEO poisoning or traffic redirection. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to serve content related to 'film avatar bluray 720p'. This indicates a likely phishing or malware distribution attempt disguised as a download lure.

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=film+avatar+bluray+720p In PDF document text
    • http://files.nedmechurch.org/uploads/1/3/0/7/130739776/8604295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/palaxipotawafowaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/nawebume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/857546876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/dagutugizemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/ruby_delete_key_from_hash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4325/8519/files/rorus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1328/3735/files/learn_calligraphy_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/gowupomageridu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/fivisimaxelunuzav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/canara_bank_stock_statement_form_nf_902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9662/7616/files/72433851213.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://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6952 5396 bytes
SHA-256: 34dc3ef83a3445afa08eee670ba446485a015cfab7c428e663f3cbf13e11c4d2
font_01_sfnt_off00007ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA4 20968 bytes
SHA-256: cb30ccbe3470e24abea742643761fe43cfe74664858df86eeeab0c9a4c342ab2
font_02_sfnt_off00009bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD3 2276 bytes
SHA-256: bad47d694a1dd9c664d92593e9aa530dcfdac95caf8f68d8ad6f6049d2ff5117
font_03_sfnt_off0000a597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA597 2628 bytes
SHA-256: 947a22d5170e0a33e875ff6c998fd0763a2eef6813cdc228cce7f17964e1b256
font_04_sfnt_off0000b0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0BE 10288 bytes
SHA-256: 21ce8e5bd43d63ec2aa80c805145d3f5a3152fd2a0c4dfff8877b21526fc61cf
font_05_sfnt_off0000d406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD406 2056 bytes
SHA-256: e56f5db8faf554166087922806b3819c377976d94af14c6b8a512386de68c265