Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8de51336b77fe9f…

MALICIOUS

PDF

51.4 KB Created: 2020-08-17 01:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e634ff61afc52a901f6db00666c243c3 SHA-1: 2d2e1ae1d970c0d6d90d3ddea591a97a8c6e204f SHA-256: c8de51336b77fe9fbbd0b67b2520f356d599e72aac134d79643e2439cf43514d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'carte de visite template free' and the malicious URL. The primary attack vector appears to be directing users to a malicious site via a link disguised as a template download.

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=carte+de+visite+template+free In PDF document text
    • http://files.theriverhouseblog.com/uploads/1/3/1/4/131437756/aaa9cabf.pdfIn PDF document text
    • http://files.musimaciay.com/uploads/1/3/0/7/130740596/zikoxofugu.pdfIn PDF document text
    • http://files.earlychildhoodchildren.com/uploads/1/3/1/0/131070751/wuwosanudi_waxupupikar.pdfIn PDF document text
    • http://dumixarok.lindsaybeattie.com/uploads/1/3/2/3/132303245/lererivezabizani.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/1/0432/5684/0354/files/soundmax_integrated_digital_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/tabeer_ur_roya_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/74742221205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7522/3200/files/tobin_s_spirit_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/5561032288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1288/1564/files/66222009176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/tekubodabekaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/bujivexajatawodubafud.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 5

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_off000070a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A3 5152 bytes
SHA-256: 92b364ac0224fe3e35029c4ca5093d16e0b6588693f32eedd632d7b7db5526e3
font_01_sfnt_off0000821f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821F 12512 bytes
SHA-256: 090872a4711634b5501b05ea4873681266df9bb9533f77eb76c048e14c37a466
font_02_sfnt_off0000aa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA01 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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