PDF malware analysis — malicious · 27ddb34ace66bdc0

MALICIOUS

PDF

82.4 KB Created: 2021-03-30 22:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a545de879d6868d49982788460aa5dc3 SHA-1: 74b046863476e416869af041ca08280a8d093c78 SHA-256: 27ddb34ace66bdc009e31a5f33b9693c2f7a27ccb1e1c3b382a066f5f17b2276

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site under the guise of a 'lab report template'. No scripts were extracted, but the presence of external URIs and the phishing detection suggest a social engineering attack.

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://jumiwimov.ru/123?utm_term=lab+report+template+high+school
- http://souve.me/fixasabiviloxojosatofoponj2c5.pdf
- http://dofukatejipoz.66ghz.com/lagu_stay_with_me_victon.pdf
- https://cdn-cms.f-static.net/uploads/4369936/normal_60379d904570c.pdf
- https://static.s123-cdn-static.com/uploads/4501804/normal_5fcc2fd55c251.pdf
- https://static.s123-cdn-static.com/uploads/4408321/normal_5fdd23492b2b4.pdf
- https://cdn-cms.f-static.net/uploads/4485436/normal_6063474845efe.pdf
- http://magic-spring.com/kogigidis7570i.pdf
- https://static.s123-cdn-static.com/uploads/4366959/normal_5ff89dae9a686.pdf
- https://cdn-cms.f-static.net/uploads/4446915/normal_602a3d7db5c3a.pdf
- http://top-odejda.com/8886357853u2z9h.pdf
- http://dexiwakuxabef.medianewsonline.com/carcinoma_thyroid.pdf
- https://cdn-cms.f-static.net/uploads/4413845/normal_6052fd79bb091.pdf
- https://cdn-cms.f-static.net/uploads/4379970/normal_603e0812e1dbf.pdf
- https://static.s123-cdn-static.com/uploads/4426409/normal_6000e6b8d34ee.pdf
- https://cdn-cms.f-static.net/uploads/4417418/normal_5fe9f475b6791.pdf
- http://nomenowunesazoz.scienceontheweb.net/xovibefexamefiwes.pdf
- http://midumadataresut.66ghz.com/81893504656.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://vodipofasofuf.rf.gd/vuxoredoz.pdf
- http://femadonalu.epizy.com/39025454133.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_off000105c0.bin` `4ce99d759d9f13fac31ef4da3e63e46b7989db8992a99284895e52673d90b80b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105C0	5428 bytes
`font_01_sfnt_off0001180e.bin` `c7c0f9940a4d3382b4f5f77a8f1a2b90bc01910aa48268e7e4a7a3adc422bef6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1180E	10788 bytes

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