Malicious PDF — malware analysis report

Static analysis result for SHA-256 6170646bf26b3b7e…

MALICIOUS

PDF

45.0 KB Created: 2020-08-18 20:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60f2f13e2aaafbb243fc287641c00ef6 SHA-1: 192f9f745955c5fbda72a4417d0146172e38a620 SHA-256: 6170646bf26b3b7e0a9abe2de7e228304bce9b0faebb4b9a631d2c0f0c541c9d
194 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, references 'Brevet report 2019', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

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=brevet+report%25C3%25A9+2019 In PDF document text
    • http://files.uticavapors.com/uploads/1/3/1/3/131384335/sitepu.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/1/0429/1638/0831/files/87916856985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/bufezadaruxozefawuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/kineka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/badelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/lorefaweravajotog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3277/1750/files/rokadefalisixugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5944/3862/files/adopt_an_insect_word_search_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/92020967350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/lanuledekobamefivisef.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_off00005851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5851 5128 bytes
SHA-256: 7ed92d888795d2d2accef9ce0a4ab7f08cb433cc7bec2f5c68386cf673249587
font_01_sfnt_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 12212 bytes
SHA-256: ad1c26f145208a07a5437ae5d8cf8f9d3651b44b06f1de7baa2a9b73f89c8f29
font_02_sfnt_off00008fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE0 16428 bytes
SHA-256: 4de993fdf65467371df45ae604b44199a0f9db96dd1987693d1d6f13b22e4334

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