Malicious PDF — malware analysis report

Static analysis result for SHA-256 6724165d2784ec92…

MALICIOUS

PDF

112.1 KB Created: 2020-08-06 17:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 196ce4c52c1f22d6182a538b96c572f4 SHA-1: 3ca5845f828a9cf5f8ff123e0e2058511f7dd53a SHA-256: 6724165d2784ec92ebb8c3e033954991ff7d57842d98f86b33bf33d520c86cdd
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded links suggest a lure to download a PDF related to 'deep learning techniques', likely a phishing or scam attempt. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=deep+learning+techniques+pdf In PDF document text
    • http://files.mss4ball.net/uploads/1/3/2/3/132302710/nanekene_zugofar_dilomuzeziwud.pdfIn PDF document text
    • http://files.dvfk.org/uploads/1/3/0/7/130740483/bafemamukabugabe.pdfIn PDF document text
    • http://files.newcastlelibraryfriends.org/uploads/1/3/1/4/131454459/7b9be02c4a495a.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/1/0434/7337/1300/files/wulozakatefefejebowene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5893/files/bedaduji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/37706353668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/91826686392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/hamming_distance_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/zelawenajivavusexexoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/to_love-_ru_fanservice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rinajimakonewob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/nogafiwezex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/ninidi.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_off00017ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17AB4 5540 bytes
SHA-256: 4ab6d0412839329ae66bf63d41cbb02391b7b0836e4e6fae789af9f675c6fb0e
font_01_sfnt_off00018d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D82 11272 bytes
SHA-256: 544ddfbe6071b6aed4c48fd9e41973d071b19360058a37e756c315b4ab11b213

Open this report in the interactive analyzer, or submit your own file for analysis.