PDF malware analysis — malicious · 221136f0bceb3ef7

MALICIOUS

PDF

78.0 KB Created: 2021-05-12 11:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 68ddaf3ac0b09e7e7dac547e3c108469 SHA-1: 238d11cfa620e0b8e3c916375b743b6c8cb80a03 SHA-256: 221136f0bceb3ef7f7e1464bf5f906efb84f8a5ad80d2bbaa7cb29f3d330e3f6

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to disposable domains and using UTM parameters, indicative of a phishing or spam campaign. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of embedded URLs and the link farm heuristic strongly suggest an attempt to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/strik?utm_term=radical+philosophy+review+of+books PDF link annotation
- http://copalofa.site/sony_xplod_turn_off_demo_mode9rmrx.pdfIn PDF document text
- http://kinoxca.xyz/night_mother_skyrimm0b6z.pdfIn PDF document text
- http://muzhskoizhurnal.ru/zigumaferuvapojozawuxqo857.pdfIn PDF document text
- http://tamogulaganero.scienceontheweb.net/applied_behavior_analysis_manual.pdfIn PDF document text
- http://alexsaf.ru/stephanie_coontz_marriage_a_history3tqtw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469852/normal_606c132b5374f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447912/normal_5fe6a7b34d61a.pdfIn PDF document text
- http://qwonder.space/how_to_put_together_total_gym_platinumyajy3.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://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_c11ad164837b43cdb7a2ae75e2417c05.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nuxomigo/lonestar_amazed_by_you.pdfIn PDF document text
- https://s3.amazonaws.com/dopugaxelelema/how_to_pair_skullcandy_push_ultra_wireless_earbuds.pdfIn PDF document text
- https://e6a48395-9ebc-465e-8505-c4b20d7b8e72.filesusr.com/ugd/81e12b_af69cf475ebf46f49c61ec64d876d9b4.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/76325ff3-a098-4da2-8cad-d14f8232a365/5372947773.pdfIn PDF document text
- https://4328a374-8b5c-4134-9cef-e132ca5fc89d.filesusr.com/ugd/6732b1_fd218d737b72496eb5686aba9bbeb154.pdf?index=trueIn PDF document text
- https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_d801f2db22754830a27f785b72d2b2eb.pdf?index=trueIn PDF document text
- https://3a5aa097-47f9-475f-9992-83bceef25cc3.filesusr.com/ugd/f55bec_61caf54422de422bb9f397eefabe20a0.pdf?index=trueIn PDF document text
- http://sefowolo.atwebpages.com/gudixasefokebamapusujur.pdfIn PDF document text
- https://s3.amazonaws.com/kuxuxemu/adnan_ma_hada_iwasa_ne_song.pdfIn PDF document text
- http://rukosivujuxu.atwebpages.com/piwozodemanibejovu.pdfIn PDF document text
- https://s3.amazonaws.com/wowonesoribu/23966666501.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c261c947-b1d6-4443-87ef-343d0a1999da/koranon.pdfIn PDF document text
- https://s3.amazonaws.com/rozebofukixus/stream_music_free.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_off0000e427.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE427	5312 bytes
SHA-256: `0fdb1fb747b18cd2792cbb74a917b88a1f50baf56e287e24e7f718e9f4e2ca1d`
`font_01_sfnt_off0000f657.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF657	11020 bytes
SHA-256: `29fdeb9e02bfe7fd3fabbc0fa3c0851e8d40ecb62b6dad7eeff27192ff6eb0cb`
`font_02_sfnt_off00011ada.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11ADA	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

Open this report in the interactive analyzer, or submit your own file for analysis.