Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f87b85e0f3af3d1…

MALICIOUS

PDF

36.8 KB Created: 2020-07-31 21:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c297cee853b00dbdde4e2109a93909ea SHA-1: d06ed9864e51f10b61a06baeb2f2722ec7a033a7 SHA-256: 3f87b85e0f3af3d196439d884b8601185220ee36e78f7377f6a7de6f90331f1b
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, https://ttraff.cc/pify?keyword=how+to+connect+matricom+controller+to+pc, points to a known malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware. 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.cc/pify?keyword=how+to+connect+matricom+controller+to+pc In PDF document text
    • http://files.love2giftembroidery.com/uploads/1/3/0/8/130814423/jolusejosaro.pdfIn PDF document text
    • http://files.veljre.com/uploads/1/3/2/7/132712139/af67bf31cb9b0d4.pdfIn PDF document text
    • http://files.worldwar2under16s.com/uploads/1/3/0/7/130776500/nidusatejodizigoletu.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/1/0432/8852/7013/files/girupuwulebizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/66924323080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/99660340140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/99548121988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/xixebirotubepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/81748848064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/86518186764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0294/3899/files/somipokatexifevenumerabod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/xetipisofotifeboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/ruperuredepifug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/39792935063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/95824059900.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 7

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_off000052bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52BB 4952 bytes
SHA-256: a9e47ae9323c4e0ee7de8b1e0299a48cede82cdfbed41cd63766161e93b3c513
font_01_sfnt_off0000638b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638B 10184 bytes
SHA-256: a1e4295025dbc45312be86f2b811248ed8ae6c4063a5067f438aa62465db8997

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