Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e5f707b6e4fbb6…

MALICIOUS

PDF

54.5 KB Created: 2020-09-20 14:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a189483a0b005194c42f60c21a9794c4 SHA-1: af14d64e4d68a54405f1340f2fedc2acb68f9422 SHA-256: 83e5f707b6e4fbb672941ef578b8c12c805f60e8fe3532dcbd6b4c7f778db4b9
184 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to suspicious or potentially malicious redirector infrastructure. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of a malicious redirector link and a link farm on disposable hosting. The document body, though partially corrupted, contains URLs that align with the observed link farm behavior, suggesting an attempt to lure users to external sites.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=zenonia+5+item+guide In PDF document text
    • http://dejela.ebcentre.co.nz/uploads/1/3/1/4/131453096/57814.pdfIn PDF document text
    • http://jikaguto.thelightersideofme.com/uploads/1/3/1/4/131406082/divuxupan-wejek-boruk.pdfIn PDF document text
    • http://desil.thegreenmedicineshop.com/uploads/1/3/0/8/130814328/logakip_vares_kegazajezuri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8a1e6ae2-ebd0-42ff-81f1-aa09327db2e0.filesusr.com/ugd/c618e9_9f32622e1ba948df83fb41bd33ad1402.pdf?index=trueIn PDF document text
    • https://9ec9a29a-070b-4231-8f83-11cc5e0f6556.filesusr.com/ugd/934fc3_a8e59d9cf24a4770a763b296d00d3ab4.pdf?index=trueIn PDF document text
    • https://332e11d9-f5ba-4e93-a3d1-3b64eb68f826.filesusr.com/ugd/d162e3_21513c8ed8264176bc7318216fc32ef7.pdf?index=trueIn PDF document text
    • https://96724dc2-0cb0-4505-816b-fd39921fcc1c.filesusr.com/ugd/787b0a_6ddf758c4601474c8d79876c5d978cd8.pdf?index=trueIn PDF document text
    • https://5f74e65a-6cfd-452f-8500-f4818285e581.filesusr.com/ugd/2c608b_e14a6bff496648cd9c4ab8a57d729a80.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9550/4536/files/cg_video_song_hdvidz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8222/2230/files/th8110r1008_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/98847762075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/17837559835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/85520221603.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_off00008fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA8 4920 bytes
SHA-256: 766bcba33dc9b1845cf7704da6364974d824e4b327d39840a0c950c91fafd297
font_01_sfnt_off0000a05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA05C 14800 bytes
SHA-256: 987e3eff952b14651ffbcb3f855b491898875db99f0036208e09c360f9360717

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