Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf61eb154fe9226…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 19:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 416dde03aceb7cff5b2617833a8cb758 SHA-1: 355810bff0ea5b5df83a5c9bc0dc63a6f105d6a8 SHA-256: caf61eb154fe92265592fdf812639de84533d7bb7a179cb03d8079757e62625f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated, but the presence of the malicious redirector and the link farm heuristic strongly suggest a malicious intent, likely to drive traffic to malicious sites or for SEO abuse. No scripts were extracted from this sample.

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.com/pify?keyword=bewars+movie+ringtones+naa+songs In PDF document text
    • http://ridixalal.jonathanodell.net/uploads/1/3/0/9/130969945/a0730ffda18d.pdfIn PDF document text
    • http://files.andreaquinnphotography.com/uploads/1/3/1/0/131070173/zejula.pdfIn PDF document text
    • http://ramagogi.themaridor.com/uploads/1/3/0/7/130740044/luzol-lekutuketeki.pdfIn PDF document text
    • http://files.katemcculloughwaterart.com/uploads/1/3/2/3/132302716/8915349.pdfIn PDF document text
    • http://files.justgivemepositivenews.com/uploads/1/3/1/4/131454034/a991e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/28951134514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2212/7004/files/rastafarian_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/pukerudexol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/mezijuzidekumufemus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0612/2393/files/22007886820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/7_characteristics_of_living_things_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/assizes_of_jerusalem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0976/8600/files/polivewerokexesuserilun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2460/5599/files/appsc_exam_calendar_2020.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 2

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_off00005d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4E 5172 bytes
SHA-256: 1d41047fb29293e847c1cd9d34f69e753a877a9496650a08286bff6dbb8a60ed
font_01_sfnt_off00006eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEA 2496 bytes
SHA-256: fa87ca633fa27efb1999abdc09957b81d62e7961be8523040c17f3d014cabcd6
font_02_sfnt_off00007a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3F 14044 bytes
SHA-256: 6755951864917f9be91a5d856c58f144e9cd48b0746fec14508f95741269b1e4

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