Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57e7d92280e0bd0…

MALICIOUS

PDF

67.1 KB Created: 2020-08-23 06:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90efef2359ba7714a796367b19c0a4a0 SHA-1: 7fa4cbacb411db5f4825e24664c030b0c8152d11 SHA-256: e57e7d92280e0bd09bcf6c12cb7db8e5dc20f05fa1981f5bddcd009138dd6adc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=cultiver+sheets+sale'. The document also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=cultiver+sheets+sale In PDF document text
    • http://files.acmechassisfactory.com/uploads/1/3/0/8/130813427/xosemizifu.pdfIn PDF document text
    • http://buzaravi.rftmedicaleducation.com/uploads/1/3/1/4/131406149/63ad6.pdfIn PDF document text
    • http://files.lakelurelabradoodles.com/uploads/1/3/2/7/132741397/popifuvig-dozegibop-lunatimute-lugizemidutaz.pdfIn PDF document text
    • http://files.cyndelladdison.com/uploads/1/3/1/3/131384663/fasutozus_remazir_lusowanafa_sanizixa.pdfIn PDF document text
    • http://nefiv.nineteen09gifts.com/uploads/1/3/0/7/130775823/977050.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/1/0431/2206/5557/files/29790624241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/23601334020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/basic_english_grammar_rules_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/high_oxalate_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8260/2914/files/wonubokemapajowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/physics_of_semiconductor_devices_sze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/16680371668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/iegeek_security_wifi_outdoor_camera_1080p_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/91077841608.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBF 4736 bytes
SHA-256: b09e92c3ffe47ba887c137c3867358716caf61294c0f22d913cfae7ab6a1e0f7
font_01_sfnt_off0000dbca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCA 10420 bytes
SHA-256: c74ef4d268ed14a3e544c1235e61bef17920b2ef360cd2ffb4ac338206519b2a