Malicious PDF — malware analysis report

Static analysis result for SHA-256 c88d9ad4483f8220…

MALICIOUS

PDF

47.4 KB Created: 2020-08-03 00:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 744e9c62135e7fcf6ea46577142a7373 SHA-1: 6f1e9c4513e1e9d3b712e7ba30c094c7dd0e984a SHA-256: c88d9ad4483f82208b30577c04ef89594aafb6d97b9c9a0c20028ce1c7aa1a4d
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary URL `https://ttraff.cc/pify?keyword=weird+anime+faces` identified as a malicious redirector. The heuristic `PDF_SEO_LINK_FARM` indicates the presence of numerous external PDF links, suggesting a coordinated effort to distribute malicious content or engage in SEO abuse. No scripts were extracted from this sample.

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=weird+anime+faces In PDF document text
    • http://files.worldnear.com/uploads/1/3/0/7/130775009/webup.pdfIn PDF document text
    • http://files.luxurylodge.fi/uploads/1/3/1/6/131636828/4439286.pdfIn PDF document text
    • http://files.pearlblossommakeup.com/uploads/1/3/1/3/131380745/9714310.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/1/0438/8611/7019/files/48825323232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7878/6965/files/61022786516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/the_other_wes_moore_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/22858828241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/gavonunaxoxoriruwegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6443/4583/files/40013863643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/lomazejakepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/76701515614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0839/3369/files/joragorupegitapag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/bepowaxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5093/2123/files/31859714027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/gebelulo.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_off00007d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D04 5148 bytes
SHA-256: 791dbf7bb64baaf9c0ef9122c713f15c3366f40bdad71b1539879206e3871017
font_01_sfnt_off00008e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E80 10120 bytes
SHA-256: ee06f38e7ba7975b37b745257cf802bcd19d830e2222996ed2419e8e34f3477f

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