Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef1239705c2548a…

MALICIOUS

PDF

34.3 KB Created: 2020-08-23 06:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b56e5561f3895f9d3c2f33720a6871e6 SHA-1: 4550cd5dccd9f50659eeb641ae2c8757ab3189ab SHA-256: fef1239705c2548ab48008453cd1eda6bb70c87030b60e400e69a4fde69e9a79
134 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=lccap+guidebook+4'. This URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=lccap+guidebook+4 In PDF document text
    • http://files.martineaxelrod.com/uploads/1/3/0/7/130738681/fe724fe84e0216a.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/1/0437/8850/1143/files/telow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/cg_police_model_answer_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7693/5068/files/ldc_answer_key_2020_parishkar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/wedosidib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/vakazevovolipinarukudiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/jukegulodibebapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/ridebomolezimomupo.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 1

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_off000048ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BA 5168 bytes
SHA-256: 42ab34f6170f23c2c66dadde3bd8fcdfa98fbb90723ea8399928349881ec8062
font_01_sfnt_off00005a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5D 10248 bytes
SHA-256: 791074341bf999487ddbe4b57ddb2fbaaa9f06693d329021e621ded2a2ca1db1

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