Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e89d28334dda15…

MALICIOUS

PDF

44.9 KB Created: 2020-07-31 05:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf548bf7d43c2329fb99887b58ff948a SHA-1: 6308b2deda879a168ed91f7044827dd85a78cb9c SHA-256: 37e89d28334dda152c886bfa92be9ce5c0cf3599c691d910e333276b5d69307e
202 Risk Score

Malware Insights

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

The PDF file contains numerous links to external PDF files, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=pdf+page+splitter+download+free', is identified as a malicious redirector. The presence of a 'download button' heuristic further supports the lure of downloading a malicious file. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+page+splitter+download+free In PDF document text
    • http://files.zestnaturalmedicine.com/uploads/1/3/2/7/132740352/sanagevim.pdfIn PDF document text
    • http://files.huntsvilledecks.com/uploads/1/3/0/9/130969297/kodinupomofajitoxa.pdfIn PDF document text
    • http://files.oceancity.md/uploads/1/3/2/8/132814276/subezozox.pdfIn PDF document text
    • http://files.qeis.org/uploads/1/3/1/4/131406800/3486881.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/1/0434/5013/8784/files/4581868174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/wabetuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0613/0337/files/22377616908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/11091967880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/wawazebazemide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/kapijiwewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8752/7078/files/lesedofamewinadilexepit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/sogir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/resolejuwiroxugososito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/nejonogegemapalezezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/9608916104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/zokenudisil.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 6

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_off000073d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D3 5088 bytes
SHA-256: 57ecb3d09124b47ef48e88e21e8aa0c4b142bd7e111c1e00d97de40746a29307
font_01_sfnt_off00008541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8541 9800 bytes
SHA-256: 1f3c6ce66337c2333b3df5de7ce67ac6f18b822b1f7404e9d3946c2a6ecf0e8c

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