PDF malware analysis — malicious · 653db389e9dcc298

MALICIOUS

PDF

79.7 KB Created: 2021-03-23 01:03:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: b32ce8b003bf4e425136dd0850cb064b SHA-1: 4123aa1bf1825012da4b53b66fb6558b19819110 SHA-256: 653db389e9dcc298bf3cd11deae91d6af71e4fd275fd433f1784989aa2ade7c0

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to potentially malicious domains, suggesting a phishing or malware distribution scheme. The PDF structure and embedded content, though heavily obfuscated, are indicative of a link farm designed to redirect users to external 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://nipisod.ru/aws?utm_term=how+to+program+a+rca+universal+remote+model+rcr414bhe PDF link annotation
- https://cdn.sqhk.co/xanapaje/hgheCje/sudoku_hard.pdfIn PDF document text
- http://lopegupukab.iblogger.org/belakige.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445735/normal_6009cf8fb7570.pdfIn PDF document text
- http://fegokodelaxen.scienceontheweb.net/best_books_download_websites.pdfIn PDF document text
- http://vuxokiwi.22web.org/ben_10_alien_force_season_1.pdfIn PDF document text
- http://jipolavex.medianewsonline.com/arrays_in_java.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427105/normal_6017ceffb543a.pdfIn PDF document text
- https://cdn.sqhk.co/dipujabuxiw/ggiifgd/kopusibivufagaride.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460466/normal_603bf4400cf4d.pdfIn PDF document text
- https://cdn.sqhk.co/sevijeruba/4iihqgc/titatilodipefezelerola.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477649/normal_5fe80e75e462b.pdfIn PDF document text
- https://cdn.sqhk.co/liripudeb/rgaTihn/6876501353.pdfIn PDF document text
- http://wozilimesiz.mypressonline.com/19083724916.pdfIn PDF document text
- https://cdn.sqhk.co/jasamomedam/ohBijhd/padufazesotoziruxigod.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://9177b9cb-4c70-42bd-a9e0-27a1bf53b67b.filesusr.com/ugd/9baf76_2ec5965c219a415f900e2fc685b1a72c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/2fc0e979-fc87-436c-95c0-19e07c5cbf21/ruud_water_heater_troubleshooting_codes.pdfIn PDF document text
- http://resilasijajatil.myartsonline.com/define_leadership_styles.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a4b4a322-c61f-4a26-9a54-85b04677816e/cisco_sg200-50p_eol.pdfIn PDF document text
- http://zomijoler.epizy.com/congruent_triangles_practice_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/44ab466d-0480-45c1-bfa6-54daa81a8f60/how_do_you_program_a_legacy_garage_door_opener_remote.pdfIn PDF document text
- https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_de52d4a9cab74d1e8a226c06cd366e05.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c812846a-2435-4270-bccb-b630c7eb686b/safety_first_movie_trailer.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_off0000eb05.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB05	5764 bytes
SHA-256: `decd42c808283fef81405023a28876c3b4c5367ba21ec6ccadb7cde35ddc8dfa`
`font_01_sfnt_off0000fe87.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE87	10712 bytes
SHA-256: `f67c53d3354b9a4d3cad50813b15d292a88279436333f68c762564b917416d1a`
`font_02_sfnt_off000122e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122E0	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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