Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1eef8d3773bd53…

MALICIOUS

PDF

43.1 KB Created: 2020-08-03 10:29:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b5c03f07a17673390d1ce41a96d2a78 SHA-1: 38ca1b61c48131cacc0df3d77aa3309f0995ff28 SHA-256: 0f1eef8d3773bd53c59177da341f2527c8f2635f7209258bb1b3ea4528a405d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to appear as a legitimate download for a project management guide, but redirects to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=hbr+guide+to+project+management+pdf+download, which is flagged as malicious. This indicates a phishing or scam attempt to trick users into visiting a harmful site.

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=hbr+guide+to+project+management+pdf+download In PDF document text
    • http://files.savoyfoundation-usa.org/uploads/1/3/1/3/131379719/subiza.pdfIn PDF document text
    • http://files.beejaysenglish.com/uploads/1/3/2/8/132814071/9463615.pdfIn PDF document text
    • http://files.karengolland.com/uploads/1/3/0/9/130969809/jurimes.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/1/0430/6288/6549/files/91972902869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3600/6817/files/72564414252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1851/7665/files/gezerub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/nekisanugipozujoferixaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/43149038628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4968/0028/files/subarukopisodagupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/86113660488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/79268503838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/fixevanomepakowimoziti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/vizavemetujunesukup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8114/5243/files/debut_video_capture_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/front_sight_training_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/lowojapamix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/what_is_memory_leak.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 5

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_off000066ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CA 5568 bytes
SHA-256: de20428a760adc63ff710b4849e1ee94327e46cb48de8d66021e30cf6c2b1347
font_01_sfnt_off000079b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B9 10888 bytes
SHA-256: 46e7d7d3db148fc61ddb8cdb50e72a9afabcd08124b87afb4919332ba48df9df

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