Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45776b2b4e5fbfd…

MALICIOUS

PDF

41.0 KB Created: 2020-08-03 15:34:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ec4f3026b14abcbf9111cbd88af49ec SHA-1: f532343d34de6c1a461ccf701d4134940a392bed SHA-256: d45776b2b4e5fbfd5d145b91d1bd15fbbeb4ca5c67ecf667d6873af5a2441d0a
194 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, with the primary link pointing to a redirector service (ttraff.ru). This suggests a link farm or redirection tactic to obscure the ultimate malicious destination. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links further supports this assessment. No scripts were extracted, and the document body was heavily obfuscated.

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=semicolon+and+comma+worksheet+pdf In PDF document text
    • http://files.childrensmarketatthemill.com/uploads/1/3/2/6/132682040/bonoripo.pdfIn PDF document text
    • http://files.michaelphinneytriathlete.com/uploads/1/3/0/9/130969885/9345144.pdfIn PDF document text
    • http://files.emilymajors.com/uploads/1/3/0/8/130814423/6672a25ec3.pdfIn PDF document text
    • http://files.nmdaga.org/uploads/1/3/1/4/131437017/zawuvonavowi_bedakesukik_sutej_sarow.pdfIn PDF document text
    • http://files.somafirewellness.com/uploads/1/3/1/3/131398008/kutagafawujifas_zexezid_gifeked.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/1/0428/8082/7558/files/39765968704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/atp_oral_exam_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/sikeniriferenilisalozeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51730359377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/viwosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/42883858886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5283/3687/files/bhagavad_gita_nguyn_ngha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9696/4261/files/kajawaxugoluwololafoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/33010662148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/5368096536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4431/5040/files/74713225915.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 5656 bytes
SHA-256: bfd26f4069785ee79ead89374df763f7ec32faaf19774cd7e39829fcf6feddc2
font_01_sfnt_off00007486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7486 10212 bytes
SHA-256: 92111a0e1b836e665ebfb807de8d23ab869ee7b495be64345ff6fede0c2be730

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