Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fef30e6fde413a…

MALICIOUS

PDF

71.6 KB Created: 2021-02-24 22:03:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20e118892c816d01795792de646036c0 SHA-1: b995d91c015f16812c79a8f0164eff85c4ac6348 SHA-256: 86fef30e6fde413ae73820c94e1b29e349b53ce501ca520a6b47297b1bb2b0b6
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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'baarspo.ru', which is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, suggests a lure related to religious text, which is a common tactic for social engineering.

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://baarspo.ru/strik?utm_term=sri+mahalakshmi+stotram+telugu+lo
    • http://gatowixipeba.mywebcommunity.org/delta_band_saw_parts_28-203.pdf
    • http://stankoff.org/why_is_my_diesel_engine_so_noisyku2y6.pdf
    • http://reawont.online/39080792471e4wkv.pdf
    • http://skywonder.space/sabarimala_temple_case_judgementnjj4a.pdf
    • http://eagleaff.com/jatoginononawiwinetumuremjem59.pdf
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5fd2e7540caa8.pdf
    • http://topplafond.xyz/29691275202949jj.pdf
    • http://fepemewavitik.66ghz.com/catecismo_de_la_iglesia_catolica_vaticano.pdf
    • http://rastet-malysh.ru/what_are_the_types_of_operating_system_and_their_functions85zyx.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tigewibejageju/fezid.pdf
    • https://s3.amazonaws.com/kiguteperilodu/kezir.pdf
    • http://ratadipemor.epizy.com/53516787987.pdf
    • https://s3.amazonaws.com/wuxupewu/26494931380.pdf
    • http://zemipajobo.rf.gd/vivapumesebidamoxekoguf.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_off0000cd5f.bin
b71085faebb7ce03676f118b69251e07f01a74fb2aee5bdaa874fed03c06f46a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5F 5044 bytes
font_01_sfnt_off0000de76.bin
397a8b377de0564d72d04044c61821ded84c3c3a391b65e0d2863db2ab7be85d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE76 10416 bytes
font_02_sfnt_off000101d7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101D7 4324 bytes

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