Malicious PDF — malware analysis report

Static analysis result for SHA-256 8495f7674a97305e…

MALICIOUS

PDF

40.2 KB Created: 2020-09-19 07:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a22934a7d3731a1b98b54017d1e819c3 SHA-1: e26aec47f8d7381d98e5e2df8939c3530e9f5c5a SHA-256: 8495f7674a97305e7d0040453ece6034d084724f6a4bc6730f22e34a76b82cfa
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure and SEO link farms, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the nature of the heuristics suggest the primary goal is to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

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.link/wix?keyword=weber%2527s+least+cost+theory+worksheet In PDF document text
    • http://mamove.allanmasseycenter.com/uploads/1/3/1/8/131871768/8ed7a02fbe913.pdfIn PDF document text
    • http://files.heartlandjungians.org/uploads/1/3/0/7/130776841/ziniruper.pdfIn PDF document text
    • http://nojebak.shopvintagedallas.com/uploads/1/3/2/6/132682646/c9c347e.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/1/0438/7209/2315/files/lulipovevodonetodug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/2507/9960/files/kafazibadanorevaritoxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6706/1910/files/bamalojizesotitesarodabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/62406987951.pdfIn PDF document text
    • https://eeaf85de-a2c9-43ee-b3ed-7f1133a6d06b.filesusr.com/ugd/51c472_796ac73345d84565b99c5f76f6da99ff.pdf?index=trueIn PDF document text
    • https://903ac84f-ee0b-4ded-a999-f9424e7b8d75.filesusr.com/ugd/9d869b_f95025b8cedc4a66b7dd36f595691df0.pdf?index=trueIn PDF document text
    • https://b3265e5c-613a-44ba-8edd-1d84dd4bee42.filesusr.com/ugd/09c3c7_2639e805a67b461a80852c427ea21982.pdf?index=trueIn PDF document text
    • https://fdd11189-42f4-4224-b4ae-cfacd823368b.filesusr.com/ugd/c450b2_2ea4a122c1fb4fa19dc1886cafbe94ea.pdf?index=trueIn PDF document text
    • https://8d58a088-b7cb-4868-b241-1765adc1911d.filesusr.com/ugd/debbe1_c74cda3f8d534ac0bfe45fb3f2a7328c.pdf?index=trueIn PDF document text
    • https://54463c45-ecfc-45ac-837d-39ddc9575694.filesusr.com/ugd/1b9faa_e99cdb55f34a4d2ca9c609051efc8266.pdf?index=trueIn PDF document text
    • https://eeb47d73-9ff0-4d8d-af10-574d958a61e0.filesusr.com/ugd/575363_a5e87753445d40389e582eb045b90045.pdf?index=trueIn 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 8

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_off00005d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D69 5332 bytes
SHA-256: 695b2cee42a4c5a6268cd0b3b2b692205a04df5b05a3c19e7deab7bf1d9dc5c0
font_01_sfnt_off00006fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA6 10716 bytes
SHA-256: 7282618c47d0e558b76be67073276192e31e3d51b04143bbe1f6695895beed0d

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