Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3839685f0682ce5…

MALICIOUS

PDF

34.2 KB Created: 2020-08-21 16:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b06b94d208cc5467b4f525720cc158f7 SHA-1: 5109f68d82721923d82207253eced7b2ad7d400a SHA-256: f3839685f0682ce53505ea29b1ac8e8ca72516041fc13feee80e7684bf5689e8
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with a seemingly benign search query. The PDF also contains a large number of external links, many of which point to PDFs hosted on Shopify, likely as part of a link farm to improve SEO for malicious content. 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.com/pify?keyword=formal+beach+dresses+canada In PDF document text
    • http://vogekutux.nankanhoc.com/uploads/1/3/2/3/132303382/wotagopiro_foruvalasi_wuritovulex.pdfIn PDF document text
    • http://files.colorbychris.com/uploads/1/3/1/4/131437848/323d1396.pdfIn PDF document text
    • http://kufobe.claudiariverotv.com/uploads/1/3/0/7/130776031/68ede8ba63.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/1/0427/9074/8316/files/cognitive_theory_of_language_acquisition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/noun_phrase_and_noun_clause.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/tolexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/tudun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5367/0822/files/brightburn_movie_in_tamilrockers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4768/1191/files/kozulapoxuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/microsoft_outlook_e-_newsletter_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/jafemajajawewokigase.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 1

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_off00004826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4826 5272 bytes
SHA-256: 03f081f79740191bfb601edefd0c3cd573a923ac735d58e0062b7734b9b803c0
font_01_sfnt_off000059ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59EA 10160 bytes
SHA-256: 699cbdb2eb4f8eb069b33dadad736a2951b5673e5a99b315ccc62e7e339e2191

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