Malicious PDF — malware analysis report

Static analysis result for SHA-256 df026e4741947c39…

MALICIOUS

PDF

55.7 KB Created: 2020-08-25 04:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92ce5df89e20f3654647d75aa2a4b0a2 SHA-1: 3f5840b10a08faa8841bd400744098308d36100b SHA-256: df026e4741947c39f3aec5f62641c431060eb142cdfa4a13e0467296ded6c8b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link farm designed to lure users to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=sindrome+anemico+en+ni%25C3%25B1os+pdf`. The document body itself is heavily obfuscated but contains embedded URLs, including the primary malicious redirector and numerous benign-looking Shopify links, likely for SEO manipulation. The presence of a malicious redirector link strongly suggests a phishing or malware distribution attempt.

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=sindrome+anemico+en+ni%25C3%25B1os+pdf In PDF document text
    • http://files.derrettphoto.com/uploads/1/3/2/6/132695325/nekege.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/1/0438/5262/8118/files/understanding_psychology_chapter_7_assessment_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4438/7481/files/autosomal_dominant_traits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9137/files/85708235851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4068/6489/files/21789712371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7699/1653/files/sakugonaxumogonavaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3464/7445/files/zujokizasenuguduxekevib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/calculations_in_excel_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/reraxuwoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7195/5353/files/us_federal_reserve_balance_sheet_unwind.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 2

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_off000099de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99DE 5584 bytes
SHA-256: 0eaf180264129e16b03eec73a81ce1ecd652e04903c391ddfc95d11ad48d1305
font_01_sfnt_off0000ac74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC74 11000 bytes
SHA-256: 8f2a3fa0b965eafdfc8bb2d7fff8e04d4416e4a79f77b0041ed46d6b88afec06

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