Malicious PDF — malware analysis report

Static analysis result for SHA-256 515ed7093be1030d…

MALICIOUS

PDF

53.8 KB Created: 2020-08-03 09:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79ebfe5bc74c9921043ab1557bfe9f48 SHA-1: cd20abe93d5238accaae3467aae1146b5e14ffe3 SHA-256: 515ed7093be1030dd5a2fdd95acd1e48e94dc752913bcfc3b9d801e01a716045
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic identifying it as a PDF SEO link farm and another flagging a link to known malicious redirector infrastructure. The document body is heavily obfuscated but contains the URL 'https://ttraff.ru/pify?keyword=late+night+interbridge', which is also flagged as malicious. This suggests the primary purpose is to manipulate search engine results or redirect users to 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=late+night+interbridge In PDF document text
    • http://files.thecakecottagemurrieta.com/uploads/1/3/0/7/130775537/velikafuroluvad.pdfIn PDF document text
    • http://files.lebaneseaustralianfriendship.com/uploads/1/3/1/3/131398424/92a29b.pdfIn PDF document text
    • http://files.weseeyoujohn.org/uploads/1/3/0/9/130969915/4943029.pdfIn PDF document text
    • http://files.mesahhealingandreadings.com/uploads/1/3/0/9/130969982/98f44929b.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/1/0429/1765/8780/files/zixogotarig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/31287503545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/40132575759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1892/5726/files/telekejowexibas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8961/5266/files/vutunifuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mabiwabupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/36440623293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/51227828425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/17885629208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5750/files/11737201457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/pdf_file_editor_for_android.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 6

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_off0000956e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x956E 4960 bytes
SHA-256: c59c66d16767eb7f99134eed1ed1901e959bd3c891cd1a7ab11bd68303a8e2ae
font_01_sfnt_off0000a647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA647 10704 bytes
SHA-256: 9ef7b0497ca2b43fc1c1685f903f212238bb0870329007ff62b00b6c358e1508

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