Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b415422b622e969…

MALICIOUS

PDF

76.4 KB Created: 2021-03-29 16:35:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8759d39f5968b33e6256f96280fb0f08 SHA-1: 1283bc78bcf9fbc01eec796d0d25cc068039c61c SHA-256: 6b415422b622e969635c1286a958f503aa0995390978f87c6c1820e82b956830
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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 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://jottigo.ru/strik?utm_term=soccer+mommy+color+theory+tri+color+vinyl PDF link annotation
    • https://rimozaruminipa.weebly.com/uploads/1/3/5/3/135391391/3288884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471960/normal_6015d74497907.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_600b11dc89526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413713/normal_605ba1a9c1440.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_5ff12415a7619.pdfIn PDF document text
    • http://juzufezike.mygamesonline.org/classification_of_baking_tools_and_equipment.pdfIn PDF document text
    • https://wegetifadozapuf.weebly.com/uploads/1/3/1/6/131637062/xesuwis_japegutupuwi_rifex.pdfIn PDF document text
    • http://nubilofanekib.mygamesonline.org/simple_human_soap_dispenser_red_light.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_603da6ab69d14.pdfIn PDF document text
    • https://busaluvugisegiw.weebly.com/uploads/1/3/4/3/134368440/5716e2d10135b.pdfIn PDF document text
    • http://tesidakikize.iblogger.org/75316259560.pdfIn PDF document text
    • https://fuwewarudizikip.weebly.com/uploads/1/3/4/6/134644733/toxibe.pdfIn PDF document text
    • http://zegobudipaju.mywebcommunity.org/affective_filter_theory.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4461694d-a6f7-4a69-895a-ff5ddeb3c622.filesusr.com/ugd/f504fb_a8a3f565f0cd47f0849041f989bb1fc2.pdf?index=trueIn PDF document text
    • http://tuxavilewik.rf.gd/30213498806.pdfIn PDF document text
    • http://jadivepijuga.myartsonline.com/kebudaxezurulofij.pdfIn PDF document text
    • http://gigozulugajaso.rf.gd/logaxeruna.pdfIn PDF document text
    • https://b9264059-5ce6-458a-812b-58b21e0c51d1.filesusr.com/ugd/9a3dc1_38e6dd835bf2475e99b4232e5f442ad6.pdf?index=trueIn PDF document text
    • http://najekaweza.onlinewebshop.net/vapowuzabusutoxo.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_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 4916 bytes
SHA-256: 77942e4ed1eac81bd3c6b6cecf90a67401706699221f867ed7c22541733d4bb1
font_01_sfnt_off0000fe24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE24 11116 bytes
SHA-256: 82562fa3210eab77c0db34379ed113f5f4108d602fcb0d49c9f9901ab8632f3f

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