Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2985591320929e…

MALICIOUS

PDF

78.2 KB Created: 2021-04-30 10:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 51015769a39c2c286439ba92f79274cc SHA-1: 507446bcec9cf5df9ee0fe257e1dd7883db7fb2a SHA-256: 2d2985591320929e7a1e29324948dbbffd912307fc6201627aefd4a3ce09168f
156 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 ClamAV and 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 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://botokaw.ru/strik?utm_term=britax+car+seat+installation PDF link annotation
    • http://epipog.com/76550898780tf1qk.pdfIn PDF document text
    • https://punoburewi.weebly.com/uploads/1/3/4/3/134305970/1188598.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/fozofulegapifovobabe.pdfIn PDF document text
    • http://xemakaze.mywebcommunity.org/technology_innovation_strategy.pdfIn PDF document text
    • http://abzac.me/nedotemukodca0or.pdfIn PDF document text
    • http://goshop32.site/vetawevifamubusi0h9t7.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/kolijaxasobamutabosimo.pdfIn PDF document text
    • http://norikaloro.mywebcommunity.org/31813298625.pdfIn PDF document text
    • http://alex-travel.moscow/survival_island_seed_minecraft_bedrock_edition1m3su.pdfIn PDF document text
    • https://bixagitiwor.weebly.com/uploads/1/3/4/6/134618264/1048220.pdfIn PDF document text
    • http://katermore.ru/how_to_repair_a_remote_control_helicopter9nidt.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/rukafuginoxuguluvug.pdfIn PDF document text
    • http://zukirudon.mypressonline.com/babonabujol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nakevoja/66749973667.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/what_is_the_highest_percentage_of_oxygen_we_can_breathe.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/19624644167.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/is_cyberpunk_playable_on_ps4_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/70320673656.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/wotadokikopotepumaxaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaeab189-18d9-41db-84cb-ed9aacb24719/tenikobukurapenemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620fc7bb-9467-44da-8c5d-dbf1e04eeacc/yo_yo_ma_fort_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/what_do_the_rainforest_sound_like.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 4700 bytes
SHA-256: 34d0d7ad5b4ddf6dd772a391c7d32afd99f4ef3f86aa811e37dee976b8be7b6a
font_01_sfnt_off0000f790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF790 11036 bytes
SHA-256: 2baef6965a0b4d8ecf77510bdcebbd1d9d1b0411aa384085353bf160de5545a3
font_02_sfnt_off00011d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D18 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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