Malicious PDF — malware analysis report

Static analysis result for SHA-256 8596e6f16c568c8d…

MALICIOUS

PDF

48.5 KB Created: 2020-07-09 09:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 816b7eb9544327ff0fc6851e6c5c154f SHA-1: efef23708b8247aac1a8068727622856b9e5fe3b SHA-256: 8596e6f16c568c8df74f4d96d180d9d8e30d281f5ba2d3b7eb6054b905674c1c
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of embedded links, many of which point to disposable domains and redirectors, indicating a link farm designed to lead users to malicious content. The ML classifier strongly flagged this PDF as malicious, and one of the URLs is identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to the 'Hyperion road guardian dash cam manual' and includes URLs that are part of the link farm.

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.com/wb?keyword=hyperion%20road%20guardian%20dash%20cam%20manual In PDF document text
    • http://files.nickpateras.org/uploads/1/3/2/7/132710655/d914f150ae.pdfIn PDF document text
    • http://files.cumberlanderfamily.org/uploads/1/3/2/6/132681030/41208a255021e3e.pdfIn PDF document text
    • http://files.rusticrevivalco.com/uploads/1/3/1/3/131398591/dubaribomikoxugave.pdfIn PDF document text
    • http://files.lauraavnaim.com/uploads/1/3/0/9/130969819/0ec2ee5.pdfIn PDF document text
    • http://files.lockmangenetics.com/uploads/1/3/0/7/130775383/nizejab.pdfIn PDF document text
    • http://files.livingmagicentertainment.com/uploads/1/3/1/4/131406606/416069ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kegedepubu.files.wordpress.com/2020/06/temunamipetebexinorer.pdfIn PDF document text
    • https://zosexev.files.wordpress.com/2020/07/17844262503.pdfIn PDF document text
    • https://jobafabiwoxo.files.wordpress.com/2020/07/64146722784.pdfIn PDF document text
    • https://jegutapaf.files.wordpress.com/2020/06/38856142965.pdfIn PDF document text
    • https://kemamutapewi.files.wordpress.com/2020/06/gewuxib.pdfIn PDF document text
    • https://rolinozopuj.files.wordpress.com/2020/06/mewatemipirikajewit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.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 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_off00007d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D59 5352 bytes
SHA-256: 296b3ad9a076acc9a2fa5bc86b44f7c011cfcb1d4aaa687b504148b70b6f477b
font_01_sfnt_off00008f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F54 10528 bytes
SHA-256: 6c0064034c296994a0f0aba1c3b175bb11567168630f0b46384734794841d188

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