Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1aba65b106c8a9…

MALICIOUS

PDF

83.8 KB Created: 2020-08-18 23:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0183cdf12f3ead5e23cbf6cf600efba SHA-1: f407ea60766f265dd8cd8a34adf72ab07a8b7806 SHA-256: 8c1aba65b106c8a91bc7b3df1e395bf92a99eb4de8fce0d60f00b64e301c607b
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for VBA-related content. This suggests a social engineering attack aimed at tricking users into visiting a malicious site. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirector link.

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=vba+copy+range+cells+to+another+sheet In PDF document text
    • http://files.modularis.co.uk/uploads/1/3/2/7/132710683/xirate-bexifag-betolaxefofov-ririkofaxon.pdfIn PDF document text
    • http://files.btbrv.com/uploads/1/3/1/1/131164174/kawijodawazajupupak.pdfIn PDF document text
    • http://files.onehopecoc.com/uploads/1/3/0/7/130775286/4915716.pdfIn PDF document text
    • http://files.itshumannature.org/uploads/1/3/2/7/132712093/8555664.pdfIn PDF document text
    • http://files.huegah.com/uploads/1/3/1/3/131381721/577c7.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/1/0432/7066/8453/files/satemulufaroxomebasebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/44532259463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/jebifawoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/68518703663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/suvijoxatanenuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9561/files/82416483130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/pixumumatejiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: blues-city-kids.com 7 samples

Related samples 8

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_off0000f6ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CA 5404 bytes
SHA-256: f33c1979067763a406e8b296e67f2a6451686e4511d171c5569add1237be6c56
font_01_sfnt_off00010921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10921 10312 bytes
SHA-256: d2b86128e401b339d2dc9fb33736e20a059ab93a2ba532220ac1ce37bce81bd7
font_02_sfnt_off00012c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C69 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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