PDF malware analysis — malicious · 77ca3a269c0362f9

MALICIOUS

PDF

72.1 KB Created: 2021-02-16 09:28:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ec5ecfb74a7b8ec41554b3a78c55cdd6 SHA-1: 91dc50672a7b60d8491ad181c61bc19ec8b54620 SHA-256: 77ca3a269c0362f9ea3bae4234c5a81a93d02096a27f734a9a6a79e86528a04d

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' suggests the document's content is designed to trick users with promises of prizes or funds, a common phishing tactic. The presence of multiple external URLs, including one flagged as PDF_URI, indicates the document is intended to redirect the user to malicious sites, likely to download further payloads or conduct phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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://druttle.ru/wix?keyword=the+masters+2017+live+stream+reddit
- http://pimebujeben.66ghz.com/atrial_fibrillation_guidelines_digoxin.pdf
- https://cdn.sqhk.co/sirobuse/egfFjdj/bally_pinball_free_play.pdf
- https://xelixexojiga.weebly.com/uploads/1/3/4/1/134108676/sifawuwujuxup.pdf
- https://dagazafija.weebly.com/uploads/1/3/1/4/131484603/lalaxoxufakuvi.pdf
- https://cdn-cms.f-static.net/uploads/4465396/normal_601be50d6b58b.pdf
- https://vosovijuz.weebly.com/uploads/1/3/0/8/130813614/kesonakud-pigejulevejosip-xedanif.pdf
- https://cdn-cms.f-static.net/uploads/4420448/normal_60174f8d44e49.pdf
- https://cdn.sqhk.co/vivepovugeli/jkIZhaQ/chase_mobile_deposit_max.pdf
- http://mxbur.fun/wulewonulelevugoizfgf.pdf
- http://fufibubesex.iblogger.org/12333780118.pdf
- https://cdn.sqhk.co/wokiwife/rhdijhj/60054854080.pdf
- https://static.s123-cdn-static.com/uploads/4489057/normal_6009a97be3776.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://foxivowopejo.rf.gd/beep_song_in_tamilanda.pdf
- http://fufinekudag.epizy.com/24257098846.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_off0000dc18.bin` `76c234f12b8dabd28dabda8e6525ec9c347f3b6338dde42b4f4a3e00cfee177f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC18	5480 bytes
`font_01_sfnt_off0000ee92.bin` `d437a50cb4e0b97fe4482207c66b640fda45382d705924ecd8e7ed5367ab5466`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE92	10764 bytes

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