Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cd919299cafa00…

MALICIOUS

PDF

43.4 KB Created: 2020-08-16 12:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5779e2fcc4d6061831b8dfc420254904 SHA-1: f3159f12b0ba8773ce732319c1fbbb05e26c7b5d SHA-256: 20cd919299cafa00ccc1daaec0fcf8f2a8110f3fa6c9f5070e3fda83ab4fa7cd
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to a video game achievement guide and a URL that leads to a malicious redirector. This suggests a social engineering lure to drive traffic to malicious infrastructure.

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=alan+wake+achievement+guide In PDF document text
    • http://fejujivek.brandtmarineinc.com/uploads/1/3/0/7/130739615/4248737.pdfIn PDF document text
    • http://xoruwi.allwyncourt.com/uploads/1/3/1/3/131380600/ec35271b6a.pdfIn PDF document text
    • http://rejizomo.watsonauctions.net/uploads/1/3/0/7/130738847/81884.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/1/0431/8534/0580/files/touring_bicycle_buyer_s_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/fobinaxibesogaxuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/nutrition_guidelines_pregnancy_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/jezur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/copernican_revolution_kuhn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/silowosemujafisib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/6829/6090/files/degree_of_data_abstraction_in_dbms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/taselimabaluwagovumot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8168/6437/files/buranefime.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF2 5284 bytes
SHA-256: 6110210d66fd256a2aeca0fb3a9b6e5cdadbfdc3d623d848642095f331afb556
font_01_sfnt_off00007ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED8 10120 bytes
SHA-256: 8488ee9d38742084c68499c6d175e9f95268fb6ee9d36ee51bbfca8c4be63a80

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