Malicious PDF — malware analysis report

Static analysis result for SHA-256 0302b189c9407223…

MALICIOUS

PDF

65.0 KB Created: 2020-11-13 20:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c76cc37adc59b1e3803d7d72af2c57b SHA-1: 7509ab5ff2e2970725c9e5198cec64e238830b7d SHA-256: 0302b189c94072230b6064388feba53bcabe8f4fb745c90e0b6e1d70a0a2682b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of an external URI pointing to 'trafficel.ru' suggests a phishing attempt, likely to trick users into believing it is related to academic materials. No scripts were extracted, but the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

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://trafficel.ru/123?utm_term=2014+ap+calculus+bc+free+response+5
    • https://cdn-cms.f-static.net/uploads/4387816/normal_5fae2f7fc7a7d.pdf
    • https://cdn-cms.f-static.net/uploads/4413696/normal_5fa358deae7d5.pdf
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5f966134b8fb9.pdf
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5f9f619b1d305.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f3d9fd6e-63c4-40dd-8c41-dd87673a256f/sunideduripufenabakun.pdf
    • https://s3.amazonaws.com/donake/minoan_snake_goddess_museum.pdf
    • https://s3.amazonaws.com/tojabixefova/prozac_nation_book_download.pdf
    • https://uploads.strikinglycdn.com/files/31cbc1bb-cea0-4249-9b09-44e060404fd9/51727522430.pdf
    • https://s3.amazonaws.com/bakoloj/53576214104.pdf
    • https://s3.amazonaws.com/pidufozu/pikova.pdf
    • https://s3.amazonaws.com/zerejibixupav/32776905839.pdf
    • https://s3.amazonaws.com/jubiferekaka/acordes_piano_remolineando.pdf
    • https://uploads.strikinglycdn.com/files/9682cb32-ddf2-48ce-a309-da24baf23c05/lloyd_tru_mp3_download_free.pdf
    • https://s3.amazonaws.com/kijelopazekune/henry_john_deutschendorf_became_famous_under_what_name.pdf
    • https://uploads.strikinglycdn.com/files/b50e7a13-b1f7-46c5-95e6-6bb5a277da4c/53974915378.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b421.bin
aff7d3dd27a86a99cc81acdfd137c91d11073ae522116e839faa714974c062bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xB421 5344 bytes
font_01_sfnt_off0000c64b.bin
d6b00d14e4bb0d8cfe6ab81ce3a022478e508d91900dd18ac4723571d3c9bde1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC64B 10216 bytes
font_02_sfnt_off0000e912.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xE912 4324 bytes