Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccccca732f9286e2…

MALICIOUS

PDF

31.7 KB Created: 2020-08-22 04:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2b35767e65cb30991ae63006866495b SHA-1: 93c98798676a7c530384a73ff0ada2fb2175ce2c SHA-256: ccccca732f9286e276b263358db003ec2b4e986923407f9cf385573d27078236
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, many of which point to a redirector service (ttraff.ru). This indicates a link farm attack pattern designed to lure users to malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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=collections+close+reader+answers In PDF document text
    • http://files.music-in-hospitality.com/uploads/1/3/1/0/131071062/9425927.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/1/0433/5042/5753/files/nctb_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/gumapofisusaxidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0342/0570/files/al_arabiya_font_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/cute_beautiful_baby_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/gewukevakosodinotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/42_answer_to_meaning_of_life_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0205/1229/files/fumoradufuvonidovosano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2119/5669/files/47062471746.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41D1 4932 bytes
SHA-256: 6357de963b57eef0d0dedea1a274d56d2ce5340e83967072014f4e12099629b9
font_01_sfnt_off000052a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A4 9312 bytes
SHA-256: e207167ac6fcbf2dde622a7b263643188376ca1de8a40d859590b09858951d9f

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