Malicious PDF — malware analysis report

Static analysis result for SHA-256 76577d3b2c837d35…

MALICIOUS

PDF

45.4 KB Created: 2020-08-14 20:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9526e5e0afc74403d023037ff9ec0014 SHA-1: ad6597e72e0bdcb3f42412e2a6b19ce9f17fcd6f SHA-256: 76577d3b2c837d3553fae76e329b7b148b6161f1d7f082d060de135d48d5d9d1
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, includes a URL that appears to be a lure for a fan remote manual, likely a phishing pretext. The presence of a malicious redirector and a large number of external links strongly suggests an attempt to drive traffic to malicious infrastructure, potentially for further exploitation or credential harvesting.

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/wb?keyword=atomberg%20fan%20remote%20manual In PDF document text
    • http://lamik.drama.shenfieldlearning.com/uploads/1/3/1/6/131636664/xojakaf-gerefivojudub-piwotuxigesed.pdfIn PDF document text
    • http://files.nicolecudzilophotography.com/uploads/1/3/1/3/131381881/4410718.pdfIn PDF document text
    • http://files.africaeuyouthlab.org/uploads/1/3/1/3/131384306/280ab.pdfIn PDF document text
    • http://fetojenin.putaboogonit.com/uploads/1/3/1/6/131636725/995b316b184de.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/1/0433/0130/6526/files/ragulapijoxazakewuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9029/4437/files/piketider.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/91185426550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/19395747695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0667/3574/files/index_of_vampire_diaries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/javapolibetabaxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/sample_blotter_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5559/3110/files/zironokowudokubunabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/wetonefon.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 6

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_off00005f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3B 5036 bytes
SHA-256: 6c2184b6672cf02eb5c2c9a4b63c6be06566a1a7ef9368d9ea8fc6360aa260cb
font_01_sfnt_off0000704f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 10288 bytes
SHA-256: bc84678ffa3d4d51d84f3b973369947d04bda53276931fc8cbbd5d9de6d5d0c3
font_02_sfnt_off0000939c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939C 16164 bytes
SHA-256: 5dc9ed390f12ed626cc6b7d34b48072e742e77445905164704ef3766ecb6c898

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