Malicious PDF — malware analysis report

Static analysis result for SHA-256 a362422f2efaa311…

MALICIOUS

PDF

68.2 KB Created: 2021-03-25 05:38:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17c4a0a45a6f5f213f506e7a8ed4537d SHA-1: a925fa236f77948f4c79af1459a83508b4aa392a SHA-256: a362422f2efaa311a2dc6b8e03534b480b69ff5482394a365c3bca201edbcabe
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'resalured.ru', which is likely used to host malicious content or redirect users to phishing sites. The document body, though heavily obfuscated, appears to be a lure related to a document title, reinforcing the phishing or malware distribution intent.

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://resalured.ru/wix?keyword=when+the+rainbow+is+enuf+full+text+pdf
    • http://reduslim-buy.site/impressora_canon_mp160_manual6auzs.pdf
    • http://ejqy.com/nafadefifaxufevivizutiizbd.pdf
    • https://cdn-cms.f-static.net/uploads/4368964/normal_6015a8983a33f.pdf
    • http://lnstagram-copyright-supports.com/cobra_microtalk_walkie_talkie_manualbbahk.pdf
    • http://a1metromovers.com/bias_fx_2_freela1ky.pdf
    • http://world-wildshop.com/47676855246j4wie.pdf
    • https://static.s123-cdn-static.com/uploads/4408004/normal_5ffd6b5f6507e.pdf
    • http://show-visitor.xyz/18477673353bvzr3.pdf
    • http://erogan24.website/magoosh_gre_1000_word_list_download3f3zw.pdf
    • https://cdn-cms.f-static.net/uploads/4463272/normal_60101dc9e3292.pdf
    • http://alkim.xyz/winnie_the_pooh_personality_test9sseh.pdf
    • http://pro-konditer.com/vtech_cordless_phone_answering_machine_manualtgq03.pdf
    • https://cdn-cms.f-static.net/uploads/4378404/normal_604f43906091e.pdf
    • https://cdn-cms.f-static.net/uploads/4492529/normal_605af0b6ada74.pdf
    • http://nefritthebestthing.site/66303856364rnuah.pdf
    • https://cdn-cms.f-static.net/uploads/4426953/normal_5fd7b67c3fbb7.pdf
    • http://lady-bug.club/zegowowv14o0.pdf
    • https://localpdf.com/0684843269
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/muvojugejoxip/fojuvolewobobi.pdf
    • https://s3.amazonaws.com/zuniverijesud/human_organs_labeling_worksheet.pdf
    • https://s3.amazonaws.com/nalifij/edge_of_seventeen_imdb_parents_guide.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.

FilenameKindSourceSize
font_00_sfnt_off0000cc1b.bin
f3964d28394abeaac6adedcdb820a40c2bcb854d1ad1e9b8ef79fd74a1d8799f
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC1B 5440 bytes
font_01_sfnt_off0000dead.bin
4468612885ed9f2dcc496194b059df0f016ac23af9330931f06609ed5130f0bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAD 10692 bytes