Malicious PDF — malware analysis report

Static analysis result for SHA-256 204643a58aeaedb8…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 04:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac06dc6d20c182e809a6603aec79cfbd SHA-1: cf9fc611fead800f0c4d35c346dd8f8c9cb102ca SHA-256: 204643a58aeaedb864f1f55e11c8700f2c51dd0fcde27778a744799b6a3d9223
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=can+data+bus+system+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=can+data+bus+system+pdf In PDF document text
    • http://files.baitboatkit.com/uploads/1/3/0/7/130739116/b8b9b6b35e.pdfIn PDF document text
    • http://ruxixa.pulleyautoparts.com/uploads/1/3/0/9/130969772/1aaf69dcd39c40.pdfIn PDF document text
    • http://files.anaeugeniophotography.org/uploads/1/3/1/4/131408024/4043550.pdfIn PDF document text
    • http://files.matthewlamburngames.com/uploads/1/3/1/3/131381422/1e5e88b.pdfIn PDF document text
    • http://files.drkathrynkimball.com/uploads/1/3/1/3/131379776/88f3c.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/1/0434/8238/2502/files/38544098773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/93838273594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/basic_electrical_engineering_book_first_year.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/57590696331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0490/files/doxawitefoxofezuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2276/1635/files/zowimujuzed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3016/files/24610629376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4093/0968/files/luguxabujuvaxidujevara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3480/4375/files/vimegejimuwixinedisow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/circle_with_a_dot_in_the_middle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/jevidoliradezowina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/lomofilimetoxibeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000621d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621D 5048 bytes
SHA-256: deeb1892f9da00a3c65a60e81bf503510331e411bb9be92244f667370a9f22ab
font_01_sfnt_off0000733d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 10208 bytes
SHA-256: 737ba586fd18b996b7fd0c3c2fcbce82d0c5f0234f48c74eaccbc052831486bd
font_02_sfnt_off00009635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9635 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333