Malicious PDF — malware analysis report

Static analysis result for SHA-256 1784cb2257132d40…

MALICIOUS

PDF

44.9 KB Created: 2020-07-28 11:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d272ce2448327e1cd72eac58814c4151 SHA-1: 47122234020922f6cd3dd3fc46955a1b5a4eb55e SHA-256: 1784cb2257132d40b2229a33e1721e9531411d8233f0a36b3a456094da6c43e0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to redirector infrastructure, specifically pointing to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, appears to be a lure for an 'installation guide'. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

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=samsung+frame+tv+installation+guide In PDF document text
    • http://files.envirolutionsconsulting.com/uploads/1/3/1/3/131379820/weriz.pdfIn PDF document text
    • http://files.sauerkrautkitty.com/uploads/1/3/2/8/132814990/4b77a2ceae2b8a.pdfIn PDF document text
    • http://files.ohscounseling.org/uploads/1/3/0/7/130776296/041efd1dd0e265.pdfIn PDF document text
    • http://files.bctcpa.ca/uploads/1/3/0/7/130775980/nimugenuvigub.pdfIn PDF document text
    • http://files.evernightdesigns.com/uploads/1/3/1/8/131857305/7353893.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/1/0431/4185/7448/files/68478061607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/56182891762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/xosezagixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/15717824811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/32646248474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/pajofuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3963/7155/files/10067161004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/39731592104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/50186516504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/dijazoferun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/rugomimemin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/17165842024.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 5

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_off00007152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7152 5272 bytes
SHA-256: 68c6da102fef1f3a550999520f5d10d588b5ad91b9d68258809c20643fee2f02
font_01_sfnt_off00008321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8321 10268 bytes
SHA-256: ad38151bd0d584075b1fc987868769e6f345e81f23a29eb8bfcf244015d46d3d

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