Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1860923ff8b4838…

MALICIOUS

PDF

40.4 KB Created: 2020-08-17 15:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5b99e29d19dea97e45b719f760ce4bf SHA-1: 2bdd83b3591514d1970cca9cca1f542ff6dc0309 SHA-256: f1860923ff8b4838269b12e1493f3000419fa4f9736fb69e8b343afba8c7d0cc
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL and a keyword suggesting a lure. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=android+podcast+app+auto In PDF document text
    • http://bufom.neattucks.com/uploads/1/3/0/8/130874493/deponijomirut.pdfIn PDF document text
    • http://files.skiowsa.com/uploads/1/3/2/6/132681296/worexepuki.pdfIn PDF document text
    • http://files.binauralbeatsmaster.com/uploads/1/3/0/7/130775786/8857350.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/1/0440/1951/5557/files/sonaxibotefilidonuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9507/2673/files/maberinimugajififepuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7118/3777/files/wheat_berries_nutrition_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/gifuravesamibapafadige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7313/files/zasol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/32300904848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/kunofetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7933/8903/files/78457851068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/redaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/wuraliwedujaserugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/fowuwodefodukaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/walt_disney_world_transportation_map.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_off00006154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6154 5024 bytes
SHA-256: 122c7551599445271ffdfc00c125d5e71c2106ec9162384fabc3e2bfe6ff17d0
font_01_sfnt_off00007269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7269 10064 bytes
SHA-256: 95c8d11dca65475746b88c01832c4db912050eecad44488b55df5542accb1865

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