PDF malware analysis — malicious · 35ec6fce34b8baa7

MALICIOUS

PDF

79.6 KB Created: 2021-03-24 14:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: c9c76f8f9805e4ec9a838dc63cc947e1 SHA-1: e6f0da6c2e224c0bdfa9bd6f32cb8310996732ab SHA-256: 35ec6fce34b8baa7cc8d0067ad55ee5b579330464043b9cb6f3fb035ebd2b687

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to direct users to potentially harmful websites. The ClamAV detection and ML classifier strongly indicate this PDF is malicious, likely a phishing or SEO spam document. No scripts were extracted, but the presence of numerous external URLs points towards a social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://maypoin.ru/strik?utm_term=2012+dodge+avenger+coolant+leak PDF link annotation
- http://abanca-electronica.com/64354894216zqgzr.pdfIn PDF document text
- https://cdn.sqhk.co/wuwexosul/5hewgjD/54757991964.pdfIn PDF document text
- https://cdn.sqhk.co/puwidebudojo/Qgijb2n/superbike_2020_results.pdfIn PDF document text
- https://cdn.sqhk.co/jukelifawap/kEihjgf/minecraft_parkour_jumps_list.pdfIn PDF document text
- https://cdn.sqhk.co/rifelefiw/hdAxBaT/free_online_learning_computer_networking.pdfIn PDF document text
- https://cdn.sqhk.co/puxezuxivas/hc7J0tI/pipes_game_free_pipeline_puzzle_game.pdfIn PDF document text
- http://parhelifrl.space/59552807439x0vo0.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://276658a2-c6b1-4a23-bc3b-56c82bce4278.filesusr.com/ugd/f9448a_7a4361b6cc0f488ba0c10799c5d5c183.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sukobogixe/46157558465.pdfIn PDF document text
- https://s3.amazonaws.com/kozewuposoridil/4920841174.pdfIn PDF document text
- https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_3aa1aad05ab74c07878ba3588523a9fb.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/5446089e-51e6-4126-8e77-ed69cfa3013e/ingenuity_portable_swing_reviews.pdfIn PDF document text
- https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_a1c27d0ae1244750bf1ed85c96b683a5.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/d56920b3-793a-49f4-af23-12bb61422b3f/weber_spirit_2_e310_cover.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/63e673e9-414b-4312-a997-f03f320a01ee/mini_dv_cassette_player_for_sale.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/81b43ae0-2d28-4b36-914b-5584c9d12a1e/90546194683.pdfIn PDF document text
- https://s3.amazonaws.com/satuja/kulapeganezavoza.pdfIn PDF document text
- https://s3.amazonaws.com/regovadeje/6455592117.pdfIn PDF document text
- https://s3.amazonaws.com/jupevuxirapi/55650521260.pdfIn PDF document text
- https://s3.amazonaws.com/mexijegedakol/sulikalarikobew.pdfIn PDF document text
- https://s3.amazonaws.com/semuxemakaw/android_studio_connect_device_ubuntu.pdfIn PDF document text
- https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_53b5cfe2f6924ec798e12948fe83f233.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/lunojol/24155061151.pdfIn PDF document text
- https://s3.amazonaws.com/sowirutelevolur/minadax.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6f08f7d3-bbea-43db-8607-51a6ccbb6184/68551625321.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ecc9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECC9	5024 bytes
SHA-256: `a1d603ee6280e1c5dba7fe2aae0e642a58107bb65f23f44f9abe718e31c4c5df`
`font_01_sfnt_off0000fdee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDEE	10832 bytes
SHA-256: `66eb38b90fdddad2a7a6ac27d8a34da63a5faa6d06a7105b2e47ec1ffe3db338`
`font_02_sfnt_off000122cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122CB	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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