PDF malware analysis — malicious · 1e8327e4acba9ba6

MALICIOUS

PDF

67.4 KB Created: 2021-03-15 23:29:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0dd9e5fb0f6682557839bcb0bbeb2880 SHA-1: ddfe76fb75bac07bbf730ed8cc5f79e318338591 SHA-256: 1e8327e4acba9ba6e722c26eab23088f73b61f72177e5f6890f9f5b8ec9e7887

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. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading content, suggesting a phishing or social engineering attack. No scripts were extracted, but the presence of external URIs and the overall detection profile point towards a malicious document.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=alexander+hamilton+ron+chernow+audiobook+free+download
- https://static.s123-cdn-static.com/uploads/4493917/normal_5fe56d812886c.pdf
- https://static.s123-cdn-static.com/uploads/4407087/normal_5fecd1286b670.pdf
- https://cdn-cms.f-static.net/uploads/4460477/normal_601863f17c6e5.pdf
- http://ditoterelutas.sportsontheweb.net/55972154370.pdf
- http://woziwowariv.sportsontheweb.net/how_to_write_group_planning_exercise.pdf
- http://rimujitibux.mypressonline.com/19277021110.pdf
- http://lupazul.mywebcommunity.org/11806236610.pdf
- http://bofitek.iblogger.org/cheeni_kum_320kbps_songs.pdf
- http://lozebakumod.22web.org/litedozojegesupafifozomon.pdf
- https://cdn-cms.f-static.net/uploads/4412582/normal_6042dac98324b.pdf
- https://static.s123-cdn-static.com/uploads/4379851/normal_5fce52279bfa8.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://pekiluji.atwebpages.com/gisogojapusoxu.pdf
- https://s3.amazonaws.com/fedojigudaj/lotus_notes_signature_template.pdf
- http://vigujabufovejo.rf.gd/18369689532.pdf
- https://s3.amazonaws.com/fosawef/93500967843.pdf
- https://s3.amazonaws.com/kugelilizibuwum/adventure_capitalist_mod_apk_2018.pdf
- http://bupikizatigog.rf.gd/free_preventive_maintenance_plan_template.pdf
- http://jokosen.atwebpages.com/1978576609.pdf
- http://patuwovoparivi.rf.gd/10382160241.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_off0000cbbe.bin` `7b1c2a77fc3241a3bdaa961a5610e4bc511b4f1ffd488d2e629050b1aee2e074`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCBBE	5436 bytes
`font_01_sfnt_off0000de29.bin` `839ffcf1294d16c2ddef5c8b77c720b598dd00791b146e19b016a883813d6ef1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE29	9904 bytes

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