PDF malware analysis — malicious · bcb3cad90db95cf0

MALICIOUS

PDF

75.7 KB Created: 2021-03-11 14:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 747c2e3ecb8d1889ba2a7a80270e4e83 SHA-1: dcec5320cc79cbd4af65d16ccfaefba4a94bf9b1 SHA-256: bcb3cad90db95cf0bb1d428e026f0dcd6b873cbd51d8b996059cbe860c4b1e60

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a social engineering tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://vilenefex.ru/strik?utm_term=youtube+small+wood+turning+projects
- https://cdn-cms.f-static.net/uploads/4376088/normal_601fc8c217006.pdf
- https://cdn-cms.f-static.net/uploads/4419194/normal_602b9ffc6f795.pdf
- http://getizibibi.22web.org/3665015063.pdf
- https://cdn-cms.f-static.net/uploads/4416928/normal_6033862a08455.pdf
- https://xegokefizu.weebly.com/uploads/1/3/5/3/135323464/nonimokoraju.pdf
- https://rudunusom.weebly.com/uploads/1/3/4/6/134602981/879850.pdf
- https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/ae045c012a4f790.pdf
- http://xipodijajul.sportsontheweb.net/sub_zero_fridge_review_australia.pdf
- https://cdn-cms.f-static.net/uploads/4466143/normal_5fe8e6331a8c7.pdf
- https://cdn-cms.f-static.net/uploads/4407749/normal_603534d4bbbf0.pdf
- https://rujusuxiledajo.weebly.com/uploads/1/3/4/8/134861970/xajomoni-pikowaro-razopilir.pdf
- http://wifefavowe.iblogger.org/nejige.pdf
- http://vipimuxatomefi.medianewsonline.com/is_an_air_fryer_really_just_a_convection_oven.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/dexodekelaseki/int1_2cos_xdx_is_equal_to.pdf
- https://s3.amazonaws.com/bejikefowu/dry_density_of_cement_in_kg_m3.pdf
- https://233b4d2f-9c44-4004-b776-098ebc281e6f.filesusr.com/ugd/7f980c_4df26ad714b04fe299ee696338e0d623.pdf?index=true
- http://gisipusizen.rf.gd/aadhar_card_mobile_number_change_form.pdf
- https://0e733887-fd72-4d21-8b10-0a39cafbc931.filesusr.com/ugd/1e4d10_a134a31ed0df4fe798cba1f6b1c96931.pdf?index=true
- http://vunonam.atwebpages.com/xelekum.pdf
- http://fuliluxu.rf.gd/msi_h81m-e33_motherboard_review.pdf
- https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_9f7f2a0790ac4520bdc886dfc42bf203.pdf?index=true
- https://s3.amazonaws.com/zidosozawok/9595611987.pdf
- https://s3.amazonaws.com/xirixepo/68195348198.pdf
- https://4de1274e-a26b-4e71-a0d1-d86f0cfee7ee.filesusr.com/ugd/ee4d88_369911e38f854ee38a8fd5bb1b22b3f2.pdf?index=true
- http://tovajukoxeboder.epizy.com/xubofimeguzozem.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e7f9.bin` `202fc8bfe0a65f3e1ed6522e61eeb3758e0c81a96b135c2aa2f414c447251683`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7F9	5664 bytes
`font_01_sfnt_off0000fb39.bin` `1e8f2af5efb227b2bd36b545a806010d19f6734d3101c4156b85f40bbca2a4cc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB39	11052 bytes

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