Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0960a807b8cd69…

MALICIOUS

PDF

42.2 KB Created: 2020-08-23 21:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6785520bfbb0741d7f34561b7adda7e6 SHA-1: d8805f1bb75bda7f9d9862f9723fe57e666784be SHA-256: 4d0960a807b8cd693de41c4816c64c999693330259581ddd0cfc5e378a40e504
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. Another heuristic indicates a link farm, suggesting an attempt to distribute malicious content or SEO abuse. The presence of a 'download button' lure further supports a phishing or social engineering attack. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=adda+telugu+movie++hd In PDF document text
    • http://files.planoeastbasketball.net/uploads/1/3/0/9/130969151/kinekubozul_vimoxolabima_poritapononefif_bigasinonid.pdfIn PDF document text
    • http://files.grahamandlane.com/uploads/1/3/1/4/131407281/zepeg.pdfIn PDF document text
    • http://tokil.emmersonenterprises.com/uploads/1/3/1/1/131163930/bakova.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2194/9335/files/59522416148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/99056879774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/fixexisogudut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4365/7627/files/aptitude_questions_on_time_and_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6828/files/gojirukinuzuwugewif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1551/1964/files/wejumajizogarox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/30814733555.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 5

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_off0000531a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531A 4788 bytes
SHA-256: 2df8afb7e150046ea00a393f0d90f0da3dd0e4a0ec96f6904ba9836ee9ecde8d
font_01_sfnt_off0000636c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636C 13708 bytes
SHA-256: 6527b7d516361b02188d573d67b334da88b9a318e847b849863b2d40067ec5c6
font_02_sfnt_off00008e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E43 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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