Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e06f7e211bbe9b…

MALICIOUS

PDF

43.6 KB Created: 2020-07-21 20:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b40b705b03d6d2e25d9db9d1ef072aba SHA-1: 819c4cec0b1e903b3fcbae7959ec8cde2d596d93 SHA-256: 86e06f7e211bbe9b59d5f284f6d05f17e0111164c27e73fc7044b6f453b01513
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to drive traffic to a malicious redirector. The primary redirector URL, https://ttraff.ru/pify?keyword=suffix+worksheets+middle+school+pdf, is flagged as malicious. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the structure and embedded links suggest a phishing or malware distribution attempt.

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.ru/pify?keyword=suffix+worksheets+middle+school+pdf In PDF document text
    • http://files.jadesoapshop.com/uploads/1/3/0/9/130969551/fuxudigu-zibunoguvekit-gajafan.pdfIn PDF document text
    • http://files.craftyfoxstudio.com/uploads/1/3/1/4/131437516/mafubojiwowezitewe.pdfIn PDF document text
    • http://files.teachingandlearningwell.com/uploads/1/3/2/7/132712508/pazez_sesijuwe_davetabofegurud_wefotakovolukos.pdfIn PDF document text
    • http://files.mixfruitonline.com/uploads/1/3/1/8/131856456/43b2a75a3a.pdfIn PDF document text
    • http://files.stmattsschoolcampbellsport.com/uploads/1/3/0/9/130969923/vemozutozapozesabaku.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/1/0433/0687/7080/files/pobilimej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/68004644678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13652925252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/xoxozitixerotani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3349/2641/files/bawijonutozakigijufunafus.pdfIn PDF document text
    • https://ribixobu.files.wordpress.com/2020/06/luvomowirakal.pdfIn PDF document text
    • https://metiwelujipe.files.wordpress.com/2020/06/mamojoni.pdfIn PDF document text
    • https://lufolifijon.files.wordpress.com/2020/06/46576597679.pdfIn PDF document text
    • https://fatafujuk.files.wordpress.com/2020/06/92892508714.pdfIn PDF document text
    • https://binepefase.files.wordpress.com/2020/06/45488098263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8102/files/54812216044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/31728029075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/ralivixefejosuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8263/files/zujifalopales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/daxutami.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_off00006d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 5288 bytes
SHA-256: 3b8668fbc9a7d71ab9eed57c843ba46e466a7a44176f5a2b44fc0431624cb3d6
font_01_sfnt_off00007f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F26 9828 bytes
SHA-256: 1cc216ccd84088b350696d54cee691be494bd00477df26af112ed590ccfa1b0a