Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4bbcc14dca9fe3d…

MALICIOUS

PDF

42.2 KB Created: 2020-08-13 22:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e0e9a24c0166e0b1e621137f9bcddfe SHA-1: 65bff61946f12e9502290ed89bf96e217169b845 SHA-256: f4bbcc14dca9fe3d6c7d90fd923e5a92ca9cf173a0d83519007b905a9ae21c09
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=ravi+prakash+name+ringtone', is flagged as malicious, indicating a redirection attempt. The document body, though heavily obfuscated, contains this URL and references to 'wkhtmltopdf', suggesting it was generated programmatically to host these links. The presence of a malicious redirector and a large number of external links points towards a campaign focused on driving traffic to potentially harmful sites.

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=ravi+prakash+name+ringtone In PDF document text
    • http://minejol.accesswellnessga.com/uploads/1/3/0/8/130814328/994903d.pdfIn PDF document text
    • http://dukefoj.wvmountainyoga.com/uploads/1/3/2/6/132681513/8835324.pdfIn PDF document text
    • http://daraba.natashahanova.com/uploads/1/3/1/3/131379698/tedopupagagi_zenisaxus_tugemiw.pdfIn PDF document text
    • http://files.foryourmilitarymarriage.com/uploads/1/3/2/6/132681836/2f4ef6d.pdfIn PDF document text
    • http://files.lavernesartpotfolio.com/uploads/1/3/2/6/132695531/985f572576c6d.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/1/0430/8543/0945/files/83408049000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/78909638025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/pixujibupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/ts_file_to_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4914/7803/files/ziporinutemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5312/8612/files/9683969542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6122/9208/files/pagpili_ng_batis_ng_impormasyon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/english_syntax_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/megepuwewovalidovijag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/77677208666.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 8

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_off00005ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 5332 bytes
SHA-256: a2ade18c3e38f728b079e4af8f6c2904d94ec9624314b271d4472c19c1aeafc6
font_01_sfnt_off000070ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CE 13800 bytes
SHA-256: e5256c8a20500caba7c235821baf876093cbc2f2d769c3e294235ff2273fb3c7

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