PDF malware analysis — malicious · 9f2d08b2ea95e5c5

MALICIOUS

PDF

80.6 KB Created: 2021-02-19 19:32:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: e11040d18da0ac5e88b020ca0734a4ec SHA-1: ab5f6dd260a02b22862e254b5fd86b1fd7fea819 SHA-256: 9f2d08b2ea95e5c55290c0700c8fca991294409dd23647d16ffe34489970cc72

206 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URIs pointing to various websites, many hosted on disposable domains. The presence of a 'QR-code redirect lure' heuristic suggests it may also attempt to trick users into scanning a QR code, further facilitating redirection to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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/123?utm_term=planet+fitness+workout+plan+reddit PDF link annotation
- https://pesowisigafu.weebly.com/uploads/1/3/0/7/130739627/gedipegis.pdfIn PDF document text
- https://wexipemeb.weebly.com/uploads/1/3/4/8/134860193/783440596f55a9.pdfIn PDF document text
- https://tabivivefevevu.weebly.com/uploads/1/3/4/8/134889686/20aca53.pdfIn PDF document text
- https://cdn.sqhk.co/jojojidatun/jhiiiak/dhoom_machale_dhoom_3_song.pdfIn PDF document text
- https://sifuparara.weebly.com/uploads/1/3/4/3/134352995/lolefi.pdfIn PDF document text
- https://cdn.sqhk.co/bufomofa/gijh4ie/dofujefuxumuziwixeda.pdfIn PDF document text
- https://vagapirub.weebly.com/uploads/1/3/4/6/134648019/dunajimazan.pdfIn PDF document text
- https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/6515467.pdfIn PDF document text
- https://cdn.sqhk.co/tajugajobib/jhghQig/piano_tiles_magic_music_tiles_games_apk.pdfIn PDF document text
- https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/7979298.pdfIn PDF document text
- https://kefepifumadig.weebly.com/uploads/1/3/1/3/131383651/kemokejuledubesaba.pdfIn PDF document text
- http://neo-tp.ru/lexan_sheet_near_mekw6zj.pdfIn PDF document text
- https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/648f2.pdfIn PDF document text
- https://parafobosa.weebly.com/uploads/1/3/1/8/131857791/xonenerefakow.pdfIn PDF document text
- https://cdn.sqhk.co/gotuxixovumu/seigZVJ/saprize_the_crane_game_persona_5.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://duliwijedij.rf.gd/coast_guard_exam_questions_and_answers.pdfIn PDF document text
- http://sumidemeg.epizy.com/french_in_action_textbook.pdfIn PDF document text
- http://rosukijabadizi.epizy.com/cisco_packet_tracer_for_ubuntu_18._04.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_off0000f091.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF091	5076 bytes
SHA-256: `5f3285df3762d370eb4c79ac38c20a52e2251d8007960631d310e546f95d1585`
`font_01_sfnt_off000101ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101EE	10816 bytes
SHA-256: `8d8fa34003b98acc043c58e5044e32fb356f37326936ad64ae61dfc3137be040`
`font_02_sfnt_off000126a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126A5	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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