Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fbbccaef8c9bd27…

MALICIOUS

PDF

49.3 KB Created: 2020-08-03 11:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85114e6bf789ac8398e28bff49401034 SHA-1: 454ebb643f67e1d498732d4160eccbe20b1e6041 SHA-256: 8fbbccaef8c9bd27b46d38c630ec117cb6c92fe0b43ae27f9e450fc69dea2e7c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass of external links, including one that redirects to malicious infrastructure. The document body, though heavily obfuscated, contains a reference to 'ccna portable command guide pdf' and the malicious URL. This suggests a phishing or social engineering attack aiming to trick users into visiting a malicious site.

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.ru/pify?keyword=ccna+portable+command+guide+pdf In PDF document text
    • http://files.drbrandthawaii.com/uploads/1/3/1/3/131398362/47990adfd.pdfIn PDF document text
    • http://files.southchaddertonhealthcentre.co.uk/uploads/1/3/1/8/131856290/5837775.pdfIn PDF document text
    • http://files.elisalorello.com/uploads/1/3/0/8/130814535/navovuriniju.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/1/0432/1103/0690/files/54240296555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/80504584596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/33437881260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/funagorabiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/7395650035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/lebasofejagew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/35490037887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/42640543714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/sitenatibifet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9367/2604/files/67066114727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/nimedimeriwitev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/69974579023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/rulukemimuzila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/superior_sleeper_cache.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 3

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_off000080ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AC 5340 bytes
SHA-256: a13ba0e376028b1c4ea76207f08b719aec1bf7724f4e91b09996ce259c8b6b1f
font_01_sfnt_off000092ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BA 11432 bytes
SHA-256: 491d0d6bf7e5f6f9a56d42b15e523ab8742799baddbf71789faf414cbe891d94

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