Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60bd5081a85674a…

MALICIOUS

PDF

39.8 KB Created: 2020-08-22 06:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 613fbb5d29049fab2fb040846fa0c77c SHA-1: 645f10a8163984e5ff04c5ed66900c0d3fea78ab SHA-256: f60bd5081a85674a87f4eca61a0db0b4954190b9e27a57b3f88e57f10882325a
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic identifying it as a link farm and another flagging a specific redirector URL. The document body, though heavily obfuscated, contains text related to 'simple and compound interest worksheet answers pdf', suggesting a lure to disguise the malicious intent. The primary malicious link identified is https://ttraff.ru/pify?keyword=simple+and+compound+interest+worksheet+answers+pdf, which is likely used to redirect the user to further malicious content.

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=simple+and+compound+interest+worksheet+answers+pdf In PDF document text
    • http://wofije.ancientwavestudios.com/uploads/1/3/1/8/131857120/f7beaf128.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/1/0448/0339/1645/files/irecover_data_recovery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/lupudiwedetipuwabaverulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8154/7424/files/anemia_drepanocitica_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/ripiwitalomiwizali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/jijakekamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/89914596565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/xowusadijamugelimitut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/64286250382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/delewekigesem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/pajupowaregumevufixiko.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 3

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_off00005c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1F 5656 bytes
SHA-256: 6aa8360fb4bd715485d66ab24bd3cb6f0ebe1bf8e86a42cc73ea627673946e8a
font_01_sfnt_off00006f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3A 10276 bytes
SHA-256: 05e52770a81a622082aedc1a4870aa706793e17982de0aca3e8f2005d66d27eb

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