Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b17e5e249a3158…

MALICIOUS

PDF

73.7 KB Created: 2021-05-13 22:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a7548fbaaac56aca7e083b3b2c7fe98b SHA-1: acc2aeb90c33b924cb464c2e8b4c58677006bfee SHA-256: 00b17e5e249a3158fd13beb3edd95753b7d67434d6966163111d299257b6565a
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xajibur.ru/strik?utm_term=kohler+cv15s+engine+oil PDF link annotation
    • http://tesugujinarijag.mywebcommunity.org/small_unlock.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454990/normal_5ffb7b2193989.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/juwigokiwexe.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ihCgjem/70012552855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_6027d8236b45a.pdfIn PDF document text
    • http://puwonasomoso.22web.org/2582017495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472764/normal_5fe12a787f114.pdfIn PDF document text
    • http://valilep.iblogger.org/10024491910.pdfIn PDF document text
    • http://xegazinijitup.mywebcommunity.org/55263120458.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419430/normal_5feb7b042e11c.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/iejafjf/wakukeb.pdfIn PDF document text
    • http://zokiwedilar.mypressonline.com/chaffoteaux_pigma_advance_30.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/ahe36he/56361065948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471514/normal_60365d175fa65.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/tsyjdkc/keyboard_piano_for_beginners_songs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414352/normal_5fce8af99fd59.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/tidoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494874/normal_6039111da38f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vonuvaxi.epizy.com/consort_diagram_template_ppt.pdfIn PDF document text
    • https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_5a037b318a6a463d88adb3d87d71fc3b.pdf?index=trueIn PDF document text
    • https://02ee9779-94d6-4ec7-959f-c0f99fe19a35.filesusr.com/ugd/cdc607_d0938ba4feac498dbe0a21466f0eb65c.pdf?index=trueIn PDF document text
    • http://fatufad.rf.gd/goxefisakulijazesedajem.pdfIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_e794b19e84474fa6808f80085e5ec10b.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_off0000e57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57A 5056 bytes
SHA-256: d3f491eda2fe86a7920f65c195243ee0d2f60af8e93419335a0f46ce33e310dd
font_01_sfnt_off0000f6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C1 10220 bytes
SHA-256: 8ff5a39da4098c1c08373ce45dbce4e0a1609bd8f10017556786c90669190c5e

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