Malicious PDF — malware analysis report

Static analysis result for SHA-256 829022d55cf5d5af…

MALICIOUS

PDF

67.3 KB Created: 2020-07-30 15:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5efd3cca529306a35aaa857fba15459 SHA-1: 0742d52f3c7c031950317884b2356df8296fe0f0 SHA-256: 829022d55cf5d5af4f3e4e9028947625ca24a33a5c6f6359c7f72e86a699a6b9
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=derive+cdf+from+pdf'. The heuristic firings indicate this is part of a link farm designed to lead users to potentially harmful content. The ML classifier strongly suggests maliciousness, and the presence of numerous links, many of which are generated SEO-style PDFs, points towards a campaign aiming to drive traffic to malicious 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.cc/pify?keyword=derive+cdf+from+pdf In PDF document text
    • http://files.catinc.org/uploads/1/3/1/6/131636890/pebexojed.pdfIn PDF document text
    • http://files.inspectorplus.ca/uploads/1/3/0/8/130814529/8103242.pdfIn PDF document text
    • http://files.rhythmresearchresources.net/uploads/1/3/1/6/131606127/gelizoxi-mevep-xuzumifam.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/1/0437/2211/3192/files/84316921331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/revowabuxomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/xejesajotigomusunozamup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/pepobewisakobepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8893/5067/files/zufujoxedogezuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/23568762012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/manigapoxupanokise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1619/1138/files/wigimisagepiworikiravaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/mozozer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2492/4319/files/58785027370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/xojisobirezogebusoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7066/0508/files/sotilonowok.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000a8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AA 4540 bytes
SHA-256: 35be3fba162b83e01ee506ff2a9baa6b8ff28fba6c8a660ed51ac876cfb71404
font_01_sfnt_off0000b822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB822 15588 bytes
SHA-256: f07dfc9f917740ae2f307b0778d60e825a674c5b451ff7f4bc6b68b3ba6c18ab
font_02_sfnt_off0000e975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE975 16440 bytes
SHA-256: 687f96b901c0f5bae551351355c367207e95de5137f6c06502d680a8caf00632

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