PDF malware analysis — malicious · 71dcf43819f4bcce

MALICIOUS

PDF

81.6 KB Created: 2021-05-19 15:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: a3829681d9e38b994dfb4e4cc69aa61d SHA-1: cf315474e9fb1ca3a40e9e9a5070923b31e76e2d SHA-256: 71dcf43819f4bcce538897a120f046cdd8ff687c7829640b68fa9f962209af28

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://bologen.ru/strik?utm_term=phonological+awareness+screening+test+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4407777/normal_606c62e2dbf36.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456389/normal_60661cc7cb496.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476437/normal_5ff2d38163f5b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490724/normal_601ca7c4250d7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387826/normal_601363be8b3df.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366362/normal_606c352d2e6e8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486042/normal_602de2686521c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495997/normal_60521970a0280.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4498392/normal_6007956aa9e9c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/0a88e675-b55e-4b9d-b7ba-08bf21bb89bc/pathfinder_campaign_setting_technology_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/62b01b81-f98b-4fb1-8d7b-85850d443686/what_is_school_climate.pdfIn PDF document text
- https://s3.amazonaws.com/xazarujokemus/uc_browser_old_version_2016_apkpure.pdfIn PDF document text
- https://s3.amazonaws.com/gaxuremewuger/android_recyclerview_adapter_get_activity.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0365340-0e8c-4edd-9441-125f41ee8469/zifalatopodamufax.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/12391143-6fd1-41c0-8ebd-34b06e07ad8b/where_is_the_lint_trap_on_a_washer_dryer_combo.pdfIn PDF document text
- https://s3.amazonaws.com/vekodupiwarobi/6751856010.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c0a974a2-03c4-4285-adec-c322d93da8d2/getegonotoxigowomaximu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b8bef2ce-36f2-4de4-8930-bb2d212fbb4f/bikerexedipakijaveme.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f44d8a7f-b613-43f9-9ffd-43d1ce8a4461/armadyl_god_book_osrs.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2525b040-ad11-4790-99a5-c05b2f859a63/what_is_the_ab_lounge_2.pdfIn PDF document text
- https://s3.amazonaws.com/tuxexi/goxegolaromikej.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dcadb81b-3a0a-4bc1-bf92-8b00706459bf/42267628660.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d2a8feaa-4cb3-43d6-a74e-1f30ef405a98/sonicwall_tz_215_setup_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8b71ce0b-d637-4b27-a73f-1e90e2187555/bojopilakatepadu.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e7c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7C4	5508 bytes
SHA-256: `37f6767a96cfe49519aac996e8862777f37b9d4974cb4d353a5ff2c810130153`
`font_01_sfnt_off0000fa94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA94	11624 bytes
SHA-256: `2f607fb894ca9d58b6e1bee2abae56717b887d884b97417ae8fb1af4a3aa4f9a`
`font_02_sfnt_off0001212f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1212F	16204 bytes
SHA-256: `541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501`

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