Malicious PDF — malware analysis report

Static analysis result for SHA-256 73df35a284f966b2…

MALICIOUS

PDF

46.8 KB Created: 2020-08-16 11:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5f3bcbac75f79598e077246e9b9bbf2 SHA-1: 63e0e0c3610dfb7ad3ecabd872ac2dbc126e4d7a SHA-256: 73df35a284f966b205737997b33352b7cb283762364bfdcd6713679b040d048e
234 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a link to known malicious redirector infrastructure. The document body, though obfuscated, contains the URL https://ttraff.com/pify?keyword=hbse+open+form+apply+date, which is also flagged as a malicious redirector. The presence of a password-protected archive lure suggests an attempt to bypass security scanning by encrypting a payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.com/pify?keyword=hbse+open+form+apply+date In PDF document text
    • http://rimiz.guelphpropertymanagement.com/uploads/1/3/0/7/130776445/7ed18411e.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/1/0434/4024/2840/files/flight_itinerary_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0461/7119/files/fepitenikof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7440/3996/files/government_spending_worksheet_p._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/5994/files/30440960821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negopolikutowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/81661519615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/puboraxuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/majigaxuxuwikegujumuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/73402365991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/tepivakewewigawenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8269/8142/files/httpd_xampp_conf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/78390776442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/antibiotic_guidelines_2020_johns_hopkins.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_off00006b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1D 5128 bytes
SHA-256: ea937920fdd95166c4344789d2a4c88bb36198b3ed14b61c032ce68ba7a1ef7c
font_01_sfnt_off00007c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6B 10492 bytes
SHA-256: a11d96c8bd33f27c16b15c98612b92f254ac684b0517cc60a0d7daeebe79b029
font_02_sfnt_off0000a01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA01C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f