Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7726fb591f1f52…

MALICIOUS

PDF

40.3 KB Created: 2020-08-07 03:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 352f9e9d0a60c7c2b997c2ba29a0b3a4 SHA-1: 5eaecb9ca2f2cc5b6e25c5f54fce8e67147e26cc SHA-256: 7c7726fb591f1f52ba6c882fd15593d19f008638071888e2381e315ae9bdf286
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.ru/pify?keyword=anthony+giddens+pdf+download'. This suggests the document is part of an SEO link farm designed to trick users into downloading malicious files or visiting phishing sites. The ML classifier also strongly indicated maliciousness.

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=anthony+giddens+pdf+download In PDF document text
    • http://files.hilmarffa.com/uploads/1/3/1/8/131856706/8fd83ba5959.pdfIn PDF document text
    • http://files.saintsandsavagespowerlifting.com/uploads/1/3/2/7/132710795/rebakuw-rulobise-dewozo.pdfIn PDF document text
    • http://files.royalengineers.org/uploads/1/3/1/8/131857120/2e45d08.pdfIn PDF document text
    • http://files.multipleconstruction.com/uploads/1/3/1/4/131453432/0afc297.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/jipifasema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/wendy_s_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4196/2649/files/50916220441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/42421908063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5373/4298/files/65306483470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/22479747490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9229/5333/files/dexuriteto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/75084201028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6908/6619/files/winuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/budapest_walking_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/55039828581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/selirasibano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/wordpress_comments_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000512a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x512A 5180 bytes
SHA-256: 1d610d29db74494fdd93b18fed341fbf1e6a2542aaae6aca37e9f1085f2cb974
font_01_sfnt_off000062e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 10324 bytes
SHA-256: 4e614d20679b9f45f1a785d76fd421b0cb9f83d05c51f5534903237c162d6f02
font_02_sfnt_off00008600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8600 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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