PDF malware analysis — malicious · cc77b5052f8a22a6

MALICIOUS

PDF

82.1 KB Created: 2021-03-09 13:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: a0ce82bfe6fa6c50c7fa0092cdb192ed SHA-1: e7dda37b05f2c97b7e6b097031ee3249c99d801b SHA-256: cc77b5052f8a22a6df07ca3f7ac7b11408570ae9a143b961707d20b1815acab1

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable domains, indicating a link farm or SEO spam operation. The primary URL, 'https://baarspo.ru/wix?keyword=olight+s10r+baton+manual', suggests a lure to a potentially malicious site. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=olight+s10r+baton+manual PDF link annotation
- https://cdn.sqhk.co/degamuwubela/ha4ha07/52625596930.pdfIn PDF document text
- https://cdn.sqhk.co/xegogeji/gJjfngc/24020410615.pdfIn PDF document text
- https://cdn.sqhk.co/dikapagoloza/O0Dmhak/neighborhood_scout_2020.pdfIn PDF document text
- https://cdn.sqhk.co/lopijikuvi/PjPhija/kuzikopasasumog.pdfIn PDF document text
- http://bopafunimuvuka.iblogger.org/satad.pdfIn PDF document text
- https://cdn.sqhk.co/gewewoturila/idK8vib/97003449091.pdfIn PDF document text
- https://cdn.sqhk.co/mibuguxinise/jfTKIhg/24400461490.pdfIn PDF document text
- https://cdn.sqhk.co/xuluriwu/hgPjh5B/dogfight_2_game_poki.pdfIn PDF document text
- https://cdn.sqhk.co/dikabopagesi/oijgehe/tier_list_creator_valorant.pdfIn PDF document text
- http://fotogodopuxet.iblogger.org/1223347481.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://uploads.strikinglycdn.com/files/52a843c4-2681-47d4-9a7d-b3311e5f9764/los_rios_de_color_purpura_serie_capitulos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7079746b-4732-4f1e-8119-52d2c3a2eb5a/how_to_connect_dvd_player_to_smart_tv_with_cable_box.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0a0c2dd2-fd43-4ef3-9f35-11841b84d8a9/34212560924.pdfIn PDF document text
- http://ferefifadiziv.rf.gd/avast_2019_license_file.pdfIn PDF document text
- https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_5b9407bfce544ab5b868f2e0272bb8a9.pdf?index=trueIn PDF document text
- http://gukimag.rf.gd/is_dish_nation_cancelled.pdfIn PDF document text
- https://66f9544f-8325-470d-a543-c07714603334.filesusr.com/ugd/4b2642_4440715abc6c471a968a91b9ff73b222.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/aef654b2-e89b-4b64-bc02-63b322ae9f18/divozalipe.pdfIn PDF document text
- https://86042ffc-9b62-460b-8552-fb2522205a17.filesusr.com/ugd/4f92c1_a63b19df59a34792b7d8c00b1c2ca396.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ef0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF0F	5224 bytes
SHA-256: `30b9e78df3815f4a13e267a64060ca0baf90d4abe6c6702f2b37ddf12ea87a36`
`font_01_sfnt_off0001009d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1009D	14376 bytes
SHA-256: `9648b815b1b73b808f1c7e2f75d8799ef66e9597554818df841d62d043f5f58a`
`font_02_sfnt_off00012d69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D69	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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