Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4b597bb9fed970…

MALICIOUS

PDF

49.4 KB Created: 2020-08-12 21:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6264d0da5e72a6ac090f426a29e83507 SHA-1: 0fce84eb7c18302f905a7c142f240258de834fa0 SHA-256: ec4b597bb9fed9707573bf79acc3680777874a54c974fee150bf282b6c6b2ade
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=speak+now+1+workbook+pdf+download'. This indicates the document's primary purpose is to redirect users to malicious content. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for the attack pattern.

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.cc/pify?keyword=speak+now+1+workbook+pdf+download In PDF document text
    • http://nawunigem.sherrithewriter.com/uploads/1/3/1/4/131482995/mitosifu_kafinaf_mozitumagenum.pdfIn PDF document text
    • http://files.babiesandbackbends.com/uploads/1/3/2/6/132695438/9740942.pdfIn PDF document text
    • http://files.sparklesnspirit.com/uploads/1/3/2/7/132712129/5054206.pdfIn PDF document text
    • http://files.murdermiletours.com/uploads/1/3/1/4/131453990/2420117.pdfIn PDF document text
    • http://files.nraimvang.com/uploads/1/3/1/6/131637313/60e94fdcd.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/1/0434/7474/7558/files/disneyland_california_adventure_map_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/vinisadupavilimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zisavugeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/6365595640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/convert_to_word_doc_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/37913872470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/9769833315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/pakadagojet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5384/0534/files/wafobepaziminojafusurarej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1541/3658/files/86845644028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/wuvuj.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_off000076bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 3528 bytes
SHA-256: eff589a3521599fa21df35c47988869b93c0d4960e964f447a2471fe952e86a8
font_01_sfnt_off00008379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8379 5308 bytes
SHA-256: 5a38939addb30cbf56bcf74bc8ba4fae70f06803d4b57df0e92fedd3ad2eddef
font_02_sfnt_off000095a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A7 10028 bytes
SHA-256: 071e24f7dc76dad6e5eea075bc7a0c789593c509e2449bda106988ad6cb6cc54