Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2a9a16560e142e…

MALICIOUS

PDF

44.8 KB Created: 2020-08-04 14:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d096e873569bd2b20f06e322b501d198 SHA-1: ded161a104719d42f9c80fde6822b7fccbbc601e SHA-256: 6b2a9a16560e142ee9039bc217e5ac023de277a155db7a36fa0141ddd8735efe
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) that is associated with malicious activity. The document body also contains a call-to-action phrase and a URL that appears to be part of a phishing or scam lure, aiming to trick users into downloading further malicious content. The ML classifier strongly indicated maliciousness.

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=free+online+pdf+to+word+converter+editable+text In PDF document text
    • http://files.gaoruideus.com/uploads/1/3/1/6/131637307/fituxolu.pdfIn PDF document text
    • http://files.leopoldwritingprogram.org/uploads/1/3/2/7/132712614/3ea99.pdfIn PDF document text
    • http://files.thomasstonewrestlingclub.org/uploads/1/3/2/6/132682051/3605317.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/1/0434/9689/8724/files/zivegukas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8635/5357/files/index_of_canais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/76720707300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/41072877176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/25461837696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/nolobol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/patadilijogigepadilame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/canon_rebel_xl_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4739/4199/files/how_to_rip_3ds_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/convert_mkv_to_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/xuwezidetibobubuwipesaj.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 3

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_off00007052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7052 5284 bytes
SHA-256: 679edff15f467f9414005f6fb026b94e78235fef88c6069a219bb868da08988b
font_01_sfnt_off00008273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8273 10420 bytes
SHA-256: eef0267bfca93cfe9c95e3d5d2b3113a97cfadd99fa18b3805ea78dc71bdca17

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