Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e37364e5cb88753…

MALICIOUS

PDF

75.9 KB Created: 2021-04-06 04:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8be268724d5daf8292c69c662ea3435b SHA-1: 8796114fa455d81def8727dcfb8815c2dd36c3aa SHA-256: 8e37364e5cb887530a6bb692327138c6477e049f99d04187e34445a2e2b4259a
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, indicating a phishing or trojan threat. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains keywords related to 'gas heater pilot light' and application metadata, suggesting a lure to disguise the malicious intent.

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://pelibifir.ru/strik?utm_term=warm+morning+gas+heater+pilot+light
    • http://shtancircul.site/770531642279jnkc.pdf
    • http://rejejiwavax.22web.org/a_series_of_unfortunate_events_movie_vs_tv_show_reddit.pdf
    • http://fosireditoj.mygamesonline.org/pharmacotherapy_of_thyroid_disorders.pdf
    • http://topplafond.xyz/383207919637jhjl.pdf
    • https://static.s123-cdn-static.com/uploads/4420752/normal_5ff8618c1a3b5.pdf
    • https://static.s123-cdn-static.com/uploads/4382780/normal_600269ca5a9e4.pdf
    • https://static.s123-cdn-static.com/uploads/4409246/normal_5fe26d520303f.pdf
    • https://cdn.sqhk.co/tutadazi/iIvieUX/4x4_russian_suvs_off-_road_2.pdf
    • http://prizinsta365.online/crazy_frog_racer_2_mod_apkrvki5.pdf
    • https://cdn.sqhk.co/vorebilifi/mjj4Kk8/94713322919.pdf
    • https://cdn.sqhk.co/mojuzizimu/gi5bF1u/73176778979.pdf
    • https://static.s123-cdn-static.com/uploads/4468843/normal_5fc5b1d4b3d85.pdf
    • http://lowwsaw.xyz/67848280024w7r79.pdf
    • http://nafarami.medianewsonline.com/richard_bandler_s_guide_to_trance_formation.pdf
    • https://cdn-cms.f-static.net/uploads/4485587/normal_6061cf9ac1762.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jezedor.epizy.com/arquitectura_maya_libros.pdf
    • http://koxaxinum.epizy.com/zetovoremekogujome.pdf
    • https://uploads.strikinglycdn.com/files/2ba5e1ce-60fa-409f-93ad-e163b6e912aa/should_i_use_the_ionizer_on_my_air_purifier.pdf
    • https://uploads.strikinglycdn.com/files/ee1e528d-e398-45f0-ade0-5e6a6dbecf05/76380900966.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_off0000e874.bin
8f37b8bb40e8b2545bfd724f029b20ba08e23b18a056c1c2ece322a6c957aa44
pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 5248 bytes
font_01_sfnt_off0000fa2f.bin
7cb1b62238b34539b382ff11909dc5872ce9d3e615a3c98c4b3058f0334e2a09
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2F 11548 bytes