Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a85cad97199868e…

MALICIOUS

PDF

38.4 KB Created: 2020-08-22 08:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67e862bc4f7cd8d5a241b7032fa3e085 SHA-1: da755c55d6daecd7372bb58978afa09c1fb094f1 SHA-256: 7a85cad97199868efde3957a56c48502212155f8b6890f36b944be8c5873957f
194 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 scam attempt. The primary redirector URL, 'https://ttraff.com/pify?keyword=ahpra+general+registration+form+psychology', is flagged as malicious. Although no scripts were extracted, the document body contains embedded URLs that lead to this malicious infrastructure, likely to download further malicious content or phish for credentials.

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.com/pify?keyword=ahpra+general+registration+form+psychology In PDF document text
    • http://files.sandrastudioone13.com/uploads/1/3/2/3/132302780/takiba.pdfIn PDF document text
    • http://guzapu.mastermindforce.com/uploads/1/3/1/6/131637316/xulizavapisaloteva.pdfIn PDF document text
    • http://files.aimeekalmus.com/uploads/1/3/0/8/130814758/dufofosugar.pdfIn PDF document text
    • http://fulifakij.birthbeforeandafter.com/uploads/1/3/0/8/130814229/pimelobi.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/1/0431/8609/4248/files/63384266769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/dulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5303/6199/files/pharma_analytical_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8565/0325/files/oxford_bookworms_library_starter_drive_into_danger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/spongebob_squarepants_movie_kisscartoon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5393/1944/files/repetytorium_angielski_sownictwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/jiwediduwereros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3693/7125/files/line_break_remover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/kulunemadoveleliwobujafar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/porsche_944_wiring_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/daxakesapejilejulivo.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_off00004a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A14 5308 bytes
SHA-256: a1250d3f62bf8d0bf067a1cae3cec633f49433aab19548419a1e3986d1ff0aa1
font_01_sfnt_off00005bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 10004 bytes
SHA-256: c808942f2926f026980c827f52961bbe431c131b587bea5a04fdb5b5bf111c98
font_02_sfnt_off00007e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378