Malicious PDF — malware analysis report

Static analysis result for SHA-256 789f6594cb87feb8…

MALICIOUS

PDF

49.3 KB Created: 2020-08-21 21:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfadc0910e1d6d505de33f43ff98c925 SHA-1: d29b733faad2d7a00d02938f13efbdd4fed2ce26 SHA-256: 789f6594cb87feb84bd2381613a54ab45b4c8a13734fcddd2534a0ffcca9ce8b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=drawing+practice+worksheets+pdf, which is presented as a free download lure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

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=drawing+practice+worksheets+pdf In PDF document text
    • http://gizinig.goodhealthforgreatlife.com/uploads/1/3/2/6/132695306/8db2a59f81.pdfIn PDF document text
    • http://vuzuliloz.sacredcirclecounseling.com/uploads/1/3/0/7/130738902/mesaturoripuwunugak.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/1/0433/0687/7080/files/91428743782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4732/9702/files/ccvc_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/hypotension_guidelines_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/3401167889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1606/0061/files/nuwidojetozikewinopijaxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/chim_chimney_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8363/6644/files/48834386370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7182/files/16178518487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/16844145812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/bin_sachivalay_paper_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulanevu.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_off000074b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B9 5328 bytes
SHA-256: e827a6e839d86e991661328365c397780c1a410ad518443524b2d81c204bcac5
font_01_sfnt_off000086e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E1 10192 bytes
SHA-256: 9e14c1b82be83d821fca2b33c0a1567a3857b3926c4654f563459b81e311660f
font_02_sfnt_off0000a9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C7 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361