Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bedfd6e58fea95b…

MALICIOUS

PDF

45.5 KB Created: 2020-08-14 12:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3538250c9655936e4a94d7689f882b3 SHA-1: 4abef30424dc5cf234c7b6238c42d6004e17af63 SHA-256: 5bedfd6e58fea95b59ed8bc8720feb212ea8985a3a32c6906fb16469b3fb969e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content, likely for a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains the malicious URL and other PDF links.

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=anti+knockback+hack++1.+8 In PDF document text
    • http://files.sarahobrienhart.com/uploads/1/3/2/6/132683142/bewowune.pdfIn PDF document text
    • http://files.thoughtandprogress.com/uploads/1/3/0/7/130776327/mizubikut-vifoves-ligajerinu.pdfIn PDF document text
    • http://difobed.4lifecapital.com/uploads/1/3/2/7/132710507/2af1fd5c.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/1/0431/0643/5232/files/jogegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0421/files/tekerijuluxojonenugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0527/0427/files/15979718839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/58652944998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5982/9149/files/xopovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/5740010965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/wumotavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/88153551606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/gekamamuderegomeporuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6489/2323/files/suzizupedisevokozologewi.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_off00007597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7597 5052 bytes
SHA-256: 6486fca40651fead5ac1e98c0ce5dc5cd429e87a12c9755b8c3876ee6542cd18
font_01_sfnt_off000086ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CE 10192 bytes
SHA-256: e3868a0854f70e669667ee75e3f89b810a6244be46b620afb0ce4f3d8d511053

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