Malicious PDF — malware analysis report

Static analysis result for SHA-256 93dcc41e8ddaf511…

MALICIOUS

PDF

81.1 KB Created: 2021-03-10 02:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: e0f73d8946962c9876a634fb43d1c7bc SHA-1: 2d808062c69fee2416467e926a76d9613bd7465a SHA-256: 93dcc41e8ddaf5119c0bf8d8adbc78367e43b27be98e741fa1ca0ace44e52eb1
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicative of a link farm or phishing lure. ClamAV and ML classifiers identified this as a malicious PDF, specifically a phishing trojan. The embedded URLs, such as 'https://soxebez.ru/aws?utm_term=what+is+green+eyes+in+latin', are likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://soxebez.ru/aws?utm_term=what+is+green+eyes+in+latin PDF link annotation
    • http://sitebomobegux.sportsontheweb.net/736328336.pdfIn PDF document text
    • http://itdomen.fun/hautbois_guide_shoplbduy.pdfIn PDF document text
    • https://zepifuvuxetota.weebly.com/uploads/1/3/6/0/136095774/kiluwul.pdfIn PDF document text
    • http://zoziwasikow.22web.org/katalofowizobiwarebedugu.pdfIn PDF document text
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/6173773.pdfIn PDF document text
    • https://ladupizisegi.weebly.com/uploads/1/3/1/3/131380895/5146579.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/yoga_mudras_for_stress_relief.pdfIn PDF document text
    • http://anarchymedya.com/how_old_is_artemis_fowl_in_the_last_booke651j.pdfIn PDF document text
    • http://scoretdho.best/genie_powerlift_900_parts_listdrrm2.pdfIn PDF document text
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/kazigewikixepijanime.pdfIn PDF document text
    • https://wimupajano.weebly.com/uploads/1/3/4/6/134682998/6acbe5895fbd2ea.pdfIn PDF document text
    • http://lirebuwoke.mygamesonline.org/brandy_alexander_gallon_ice_cream.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
    • http://xasejumav.onlinewebshop.net/kosijamamiwogedo.pdfIn PDF document text
    • https://b760d8db-9746-4821-aa2b-94c9f806d328.filesusr.com/ugd/26ce45_bade6fff13d4410cb90283841c5385ff.pdf?index=trueIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_332a85f217ea4163bfeb6f28890173f4.pdf?index=trueIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_01e171c42aef4319a6bdbca2fa0d6a0d.pdf?index=trueIn PDF document text
    • https://ccd4a2e6-63e2-4dcb-a02e-1ae1253dabcc.filesusr.com/ugd/059ff1_b0667baad3934a15a2f023c815d8cf6a.pdf?index=trueIn PDF document text
    • http://sogivuwe.onlinewebshop.net/do_gamestop_repair_consoles.pdfIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_fa359d2c91be42a6a4044f8e51435a2a.pdf?index=trueIn PDF document text
    • http://zetitovafe.rf.gd/60183090461.pdfIn PDF document text
    • https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_ea14be4d603442b58d824dfe15b78d4b.pdf?index=trueIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_2182ff66aa0c4411a182696a4dd880d8.pdf?index=trueIn PDF document text
    • http://balepififeri.rf.gd/sheetrock_saw_electric.pdfIn PDF document text
    • https://7605d98d-8b17-4a41-9383-f5c8d5af9bcc.filesusr.com/ugd/2bed4c_a218fe453ddc4491b54a832afe3398c7.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF175 4740 bytes
SHA-256: c7e89af7ba864c92f89a469f8121a893911821484256800456ea715b0c512fbc
font_01_sfnt_off00010187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10187 11612 bytes
SHA-256: 4fc1d1dcf85a5bb1841cc0427f70680e63f29f108c749edbfeea596ff73177d1
font_02_sfnt_off0001289b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1289B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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