Malicious PDF — malware analysis report

Static analysis result for SHA-256 4456d6bfcbd9e5b8…

MALICIOUS

PDF

46.6 KB Created: 2020-08-10 02:26:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb3b16b0160f47c0f4381e240cc2f069 SHA-1: 98ce28c30c60cd5cdd4fd4433bc863bfda3ee1e3 SHA-256: 4456d6bfcbd9e5b80930a8b2eafb1dbce74b164d550b16bbda8ce05965fbf130
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.ru/pify?keyword=character+analysis+questions+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to disguise malicious content as legitimate documents. The ML classifier strongly supports the malicious verdict.

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=character+analysis+questions+pdf In PDF document text
    • http://rixez.projectreturnmilwaukee.org/uploads/1/3/0/7/130738970/6326142.pdfIn PDF document text
    • http://files.prbydenise.com/uploads/1/3/0/8/130813409/tozakasafifiw.pdfIn PDF document text
    • http://files.gleimlight.com/uploads/1/3/1/0/131070113/lemofutalaxix-rapit-lomusawor.pdfIn PDF document text
    • http://fafifon.ceremoniesbylorrainewafer.com.au/uploads/1/3/0/9/130969489/2069738.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/1/0446/6973/0979/files/panera_bread_lunch_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/83864435277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/mogikavawirikifowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/sadulikininigeraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/amines_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/13623455973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/98678105012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/51823789401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9249/8850/files/lazixoxibav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/10th_maths_guide_tamil_medium_download.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9C 5376 bytes
SHA-256: e24938909f933b7350b3778a585e11b4e6223e972e3ab819a56ac67e47511c26
font_01_sfnt_off00007cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDD 10048 bytes
SHA-256: b5cc69ebc1b54e91691752b147f4d7046b6942e8a9cbf5ce4a6d26c239ee1ccb
font_02_sfnt_off00009f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F25 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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