Malicious PDF — malware analysis report

Static analysis result for SHA-256 454bfedc94ae8268…

MALICIOUS

PDF

44.6 KB Created: 2020-08-01 11:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5d0b8e4e6ef30f7e9afdac1b148d530 SHA-1: e0dcf71a5d3cbd962a62bac4cd368d1916ecdd6d SHA-256: 454bfedc94ae8268dbb21b5b7f9c440116524b3ef45b05d4b0c540f6cccf63d9
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the primary attack vector appears to be the malicious redirection and link farm.

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=php+datetime+format In PDF document text
    • http://files.grahamwilliams.net/uploads/1/3/1/8/131856121/9341688.pdfIn PDF document text
    • http://files.madeleinedarcy.com/uploads/1/3/1/4/131452887/00e3bfd2.pdfIn PDF document text
    • http://files.canadianautomotivejournal.com/uploads/1/3/2/6/132680789/fumamifa.pdfIn PDF document text
    • http://files.capecodlearningtours.com/uploads/1/3/1/3/131379692/warej.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/1/0430/1602/8309/files/dijigudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/tixodubag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/39926312677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/36854080146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/25989086110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/77974347001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9883/8942/files/dokavuseretepeputetas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/11600268964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/vunuviwatowakujagatutajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/bapozukevob.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_off000062fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FA 4756 bytes
SHA-256: 0f033a70dd3e7bc55c6ccb6668763c340c27dde4a61c4494bf9ca7d3c993b9ff
font_01_sfnt_off00007329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 10600 bytes
SHA-256: 5ceff04b0a201ea89f01eb861e5cf5810e78e8a69fcd15795c4b523f34a11d47
font_02_sfnt_off00009774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9774 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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