PDF malware analysis — malicious · d210308b8ad63b87

MALICIOUS

PDF

77.1 KB Created: 2021-02-27 19:48:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 77ed64b4d28274bd2072db33ee11810b SHA-1: 80c0788004587e02d29102377d0db2a37b02c39e SHA-256: d210308b8ad63b87e57ad09f5850230e977a812b2b9840264bf6572a9db81479

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially obfuscated, suggests a lure related to home goods assembly, which is a common tactic for phishing campaigns.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/strik?utm_term=how+to+assemble+mainstays+bathroom+space+saver
- https://cdn.sqhk.co/wugotiparo/5hahgUS/knife_smash_hits_song_list.pdf
- https://cdn-cms.f-static.net/uploads/4486751/normal_5fd276f50db5b.pdf
- https://cdn-cms.f-static.net/uploads/4495707/normal_601ff7ac01725.pdf
- https://cdn-cms.f-static.net/uploads/4388276/normal_602c8fe4edfbd.pdf
- http://expressday.online/467918297936l56z.pdf
- https://cdn.sqhk.co/lanumakefu/hfqqAFH/77140175233.pdf
- https://cdn.sqhk.co/kewixoretuze/jaV0ijL/44481264187.pdf
- https://static.s123-cdn-static.com/uploads/4426269/normal_60017e01e8abd.pdf
- http://fokagud.iblogger.org/vampire_diaries_fanfiction_damon_and_stefan_lemon.pdf
- https://cdn-cms.f-static.net/uploads/4411491/normal_5fdbb04ab1cd6.pdf
- https://cdn.sqhk.co/nakijalufiw/Bvicjh6/79696756732.pdf
- https://static.s123-cdn-static.com/uploads/4375708/normal_5fe05837a0454.pdf
- https://cdn-cms.f-static.net/uploads/4385197/normal_601bb3d3e52d6.pdf
- https://cdn-cms.f-static.net/uploads/4369783/normal_60265745496ab.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/pogolo/42623921099.pdf
- https://s3.amazonaws.com/donarepemi/selenium_automation_testing_interview_questions.pdf
- https://s3.amazonaws.com/wovugi/87907665789.pdf
- https://s3.amazonaws.com/borokegujuzero/58327442774.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_off0000ef04.bin` `d29d79aff8b40afe199461937bd5506139e91911caf886bc8a4f72d59e0d2fc5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF04	5528 bytes
`font_01_sfnt_off000101b7.bin` `972f9fbd6dafd47abf6dc2411a9e5f7b17b5ebe4b618ff75ac231ff2e335c302`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101B7	10832 bytes

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