Malicious PDF — malware analysis report

Static analysis result for SHA-256 a83d74410147abac…

MALICIOUS

PDF

47.8 KB Created: 2020-07-31 08:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87a0547136742ace0066bb171287a6e9 SHA-1: 3340f5c3e84256eaa67a08bafb8ec267aa056a86 SHA-256: a83d74410147abac0feb8574aff112af5b588c52282afdd385deb853d44c3c25
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a link to known malicious redirector infrastructure. It also features a link farm of external PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of a visual download button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bruce+dickinson+biography+pdf In PDF document text
    • http://files.pro-help.co.uk/uploads/1/3/1/4/131482822/towojakolulaxax_lubepamikububo_fagajug.pdfIn PDF document text
    • http://files.tlc-nanbpwc.org/uploads/1/3/1/4/131406372/3863976.pdfIn PDF document text
    • http://files.practicingmdleaders.com/uploads/1/3/1/6/131607712/remefip.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/1/0432/5795/4464/files/dagoxurilapuruwimuxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9408/8611/files/binadixutawilenigufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/sosopesuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/xovavogafar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3657/1805/files/matomujubusalomofevuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/28453660596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/mavikudojobulapatesiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/60707810568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/dufaromafixixijono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3622/files/67953487859.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 7

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_off00007d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D59 5544 bytes
SHA-256: 395eddf2627d9d6e62e7b25a198fc2af0b72f15f3ffbec41aa384b0b9f7cb56b
font_01_sfnt_off0000902c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902C 10052 bytes
SHA-256: d3d35d4528f456d1bf76fccb90baa67fa614d6c4a6f111500a7fd2c39a6e274e

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