Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66aeb56cb95213b…

MALICIOUS

PDF

79.6 KB Created: 2021-03-30 03:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bf646c4944183692e7bfb4897d6e4fd SHA-1: 8c89c04797488497eed75fd8aa087a722d8521e5 SHA-256: e66aeb56cb95213bec41d1c5a0de77e9bdd82b7af759a22157f5f4bcfe87665d
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, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to contain keywords related to furnace parts, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/strik?utm_term=armstrong+furnace+part+numbers
    • https://cdn-cms.f-static.net/uploads/4453747/normal_600cb63647f2c.pdf
    • https://cdn-cms.f-static.net/uploads/4382639/normal_6013a7de64e79.pdf
    • https://static.s123-cdn-static.com/uploads/4417998/normal_5ffd2b33c0f9b.pdf
    • https://cdn-cms.f-static.net/uploads/4413362/normal_6040a69aa0390.pdf
    • http://vidclips.design/lord_of_the_rings_book_summary_two_towerscd6xs.pdf
    • https://cdn-cms.f-static.net/uploads/4494432/normal_5fe9b4690b1fe.pdf
    • http://politach.com/95203283625u06rn.pdf
    • https://static.s123-cdn-static.com/uploads/4451028/normal_5fde211c5978b.pdf
    • https://cdn-cms.f-static.net/uploads/4530578/normal_5fd894e9aaf92.pdf
    • http://tefozunamosolo.iblogger.org/watchmen_full_movie_download_in_hindi_480p_filmyzilla.pdf
    • https://static.s123-cdn-static.com/uploads/4466679/normal_5ff81eae7eaa1.pdf
    • https://static.s123-cdn-static.com/uploads/4475000/normal_5ff0b60f55472.pdf
    • http://lebojabufi.medianewsonline.com/97517144867.pdf
    • https://cdn-cms.f-static.net/uploads/4368226/normal_6057084b1a8f1.pdf
    • http://comforfemj.fun/97028313220fqkq9.pdf
    • http://znasila.ru/12503717712slu9.pdf
    • https://static.s123-cdn-static.com/uploads/4420610/normal_5fcc304bb6e15.pdf
    • https://static.s123-cdn-static.com/uploads/4482618/normal_60007c7551368.pdf
    • http://dikoxikikalonib.scienceontheweb.net/all_archie_comics.pdf
    • https://cdn-cms.f-static.net/uploads/4450248/normal_600d0ae5ed81a.pdf
    • http://airet.space/fx_9750gii_integral6mvam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wenaxuju.epizy.com/40953659581.pdf
    • http://kaporeko.rf.gd/resikumipefovaxojis.pdf
    • http://tobifovibel.rf.gd/35701467746.pdf
    • http://molegonemuk.rf.gd/aer_lingus_flight_delay_compensation_claim_form.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_off0000f60b.bin
464bbbe57ff814790425bffa1e2a61b16c30c2a6b0af4f419c404c91ceb8ee83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF60B 5432 bytes
font_01_sfnt_off00010872.bin
e2e8b4de6f156194bc72af8bca5913e1687e5fe8d04d7bd4b64753571014eb9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10872 11344 bytes

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