Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b0aee9ca81bc13…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 22:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0dab43906a5f10b5ee5f4479941bd1df SHA-1: a6c0cfa0c8b4d01ae825bc91c64631a25cade084 SHA-256: b8b0aee9ca81bc13fc3a6dd728484d61d592d37230b40155cae8e3fa7be6a2f9
210 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or malware distribution attempt. The presence of a fake download button and urgency lures further support this. The primary malicious URL identified is https://ttraff.ru/pify?keyword=wondershare+pdf+to+word+converter, which is used in conjunction with links to benign Shopify-hosted PDFs to appear legitimate.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=wondershare+pdf+to+word+converter In PDF document text
    • http://files.sgrhopixi.org/uploads/1/3/0/8/130874567/lijejo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/66243340594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3817/8470/files/babalu_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/2007_polaris_sportsman_500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7526/2869/files/zojaliloro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9910/2110/files/sijometesuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/21893338966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/third_conditional_perfect_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2201/4885/files/tamil_news_paper_download_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4618/2822/files/gajilutapusakomuzapamopil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8203/1007/files/44719290245.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C1 5116 bytes
SHA-256: 7514e05815acb5f8200d68fb9365da4c5dd85127e8be35a94a075d073a242081
font_01_sfnt_off00005b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B33 10012 bytes
SHA-256: a1461bc47ce304748882452d881a5f933c3a53bc37f7ac89b88d45301ddb5719
font_02_sfnt_off00007d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2