Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55edfaabc96751d…

MALICIOUS

PDF

70.7 KB Created: 2021-03-17 21:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 134b85e3e829ceb2f255cd3817428df8 SHA-1: 21e4b7bbcc594cddc9c80b61ac94114a12dadd99 SHA-256: d55edfaabc96751dc33038bae9bf17f261e408247cb488a9b028351134fd6c04
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users through social engineering, likely as a phishing lure.

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://dafemum.ru/123?utm_term=coordinate+grid+worksheet+maker
    • http://reduslimitalia-oficial.site/where_is_navy_seal_training_done1gsgy.pdf
    • http://erethiztzj.space/craftsman_109_lathe_for_saleeubfa.pdf
    • http://vostokzapad.su/935650167070dxlo.pdf
    • http://activa-fb.com/why_did_prehistory_end810j7.pdf
    • https://static.s123-cdn-static.com/uploads/4417814/normal_5fe0e47f2e6a0.pdf
    • http://zerkalo-fugicar.website/zombie_shooter_survive_the_undead_outbreak_hack_apkr2v1h.pdf
    • http://polypak.site/59284427690jcsnb.pdf
    • https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/zixofakef-rotevibu.pdf
    • http://fruit-citrus.space/ayodhya_tamil_movie_free1ll66.pdf
    • https://cdn-cms.f-static.net/uploads/4447646/normal_6027f2141a0f1.pdf
    • https://cdn-cms.f-static.net/uploads/4385213/normal_602d04b089e26.pdf
    • https://kolenogu.weebly.com/uploads/1/3/1/8/131871799/9045854.pdf
    • http://opros.xyz/bebebowuvy2ky5.pdf
    • http://my-credit.info/presto_pressure_cooker_canning_recipes54iug.pdf
    • https://fimuxexepal.weebly.com/uploads/1/3/4/6/134615427/809765.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tasewegevatale.rf.gd/a_cuanto_equivalen_100_gramos_en_mililitros.pdf
    • https://uploads.strikinglycdn.com/files/c47d4add-dc36-4ca5-b73d-27c40cf7f264/is_battle_of_gods_canon.pdf
    • https://uploads.strikinglycdn.com/files/e1767a85-2370-4e39-b1ef-ac2778e81ec1/89233814706.pdf
    • http://kifowusaw.epizy.com/vowelibanudowirosiluwugo.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_off0000d7d1.bin
442bbf9fef3090b552a868db98e07a00d1ec20cab8510cb167df26c3afd0c175
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D1 5268 bytes
font_01_sfnt_off0000e9a2.bin
f6648114ce23076144d8ceaa7170cb594cea4fc4cabf007175bb4aecacf94b41
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A2 10596 bytes