Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfabc6cf81f869e…

MALICIOUS

PDF

39.4 KB Created: 2020-08-19 05:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5a1a63823d4e052eb2c5a5354391ec2 SHA-1: 327d47d6ee51e24f572290765915376af953c80a SHA-256: 4dfabc6cf81f869e27d8e9db0c7234399e653bd6abf0ebe776191b43ffdf7e67
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests the document is designed to lure users into clicking malicious links under the guise of providing a game guide. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=bomberman+act+zero+achievement+guide In PDF document text
    • http://penenub.hooponhoops.com/uploads/1/3/1/3/131380005/butakude_litavagesure_nakaximoxo_zamubavem.pdfIn PDF document text
    • http://files.reversac-traductions.com/uploads/1/3/1/4/131437044/2785849.pdfIn PDF document text
    • http://files.kb-marine.com/uploads/1/3/1/4/131406412/ketibu.pdfIn PDF document text
    • http://files.brunerscience.com/uploads/1/3/1/6/131606094/xunigudab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1324/9946/files/dodavunuwodibaxipovazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/43540913456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/79518409581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/guzapibenuberipil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/75463675827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/xawavoladabokojevuwow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/nudaluzob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/belidezunepizukizotefanij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3138/files/walosiganofefowupelezena.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
🗂 Part of campaign: reversac-traductions.com 3 samples

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E04 5324 bytes
SHA-256: f8c13834d5787142a32da35e1b59ad8075d500abf8194d59b5cbf3a7c1731ad1
font_01_sfnt_off00005ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF2 10116 bytes
SHA-256: 60f27d521eb2da22e1be8ead18dee130de24265c6ef3fdbc9cc9ed453521ceeb
font_02_sfnt_off00008291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8291 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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