Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2efd15bcc0b38d0…

MALICIOUS

PDF

116.0 KB Created: 2020-08-10 02:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b671dcacef6e7130bc67aac8957e0ed SHA-1: 4c72a0ae6e1615708366f9cc911932da814e09fa SHA-256: f2efd15bcc0b38d09334ed91005bbaf7b0102846c6e6d844da3ea17d0466c783
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack involving a password-protected archive.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.com/pify?keyword=focused+antenatal+care+in+ethiopia+pdf In PDF document text
    • http://files.printing-plant.com/uploads/1/3/0/7/130740264/pupup_pisidimedaxisi_xukavekogoro.pdfIn PDF document text
    • http://files.lacroixfinancialcoaching.com/uploads/1/3/1/4/131454355/nifugok_fapasisemo_magufikep.pdfIn PDF document text
    • http://files.eastsideserves.org/uploads/1/3/1/3/131378952/mokive.pdfIn PDF document text
    • http://files.harlemvibes.com/uploads/1/3/1/4/131408204/kekezitipivij-giluwolineso.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/1/0434/1334/0312/files/gekakot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6828/4316/files/51718067463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/84277747741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/xuvor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1311/5802/files/davirutixexokolexisabete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/huckleberry_finn_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/mom_son_porn_comic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/kewofepanugugenijival.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/49498193516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/16465157156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/suzosiwigavizukibowin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/1012193110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/97353964124.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 8

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_off00017dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DBE 5196 bytes
SHA-256: 6a210416b31cd4c4fa2b785e848ec1e8a13927e576578a88bba9c30ddd7af372
font_01_sfnt_off00018f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F68 16392 bytes
SHA-256: ef9f538066d18cdaaf11db5132e252e2b7c76ff7a252230481aabcfb734a49a9

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