Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce1be642ea06e583…

MALICIOUS

PDF

90.8 KB Created: 2021-03-17 23:30:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1efb2d6258deb7209263c1995c7b71 SHA-1: 2f19626acc57ccbb622e5d04251adf7c8eda7649 SHA-256: ce1be642ea06e583f649acb83e0e59517513a500f1cc4fc0462480db49671802
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious website, aligning with phishing attack patterns.

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://soxebez.ru/award?keyword=resting+membrane+potential+and+action+potential+pdf
    • https://funogefoxareso.weebly.com/uploads/1/3/4/0/134041001/paxoxo-judoxezabipovas.pdf
    • http://sun-italy.space/html5_css3_for_dummiesxoo7k.pdf
    • http://viruxego.mygamesonline.org/spivak_solutions_calculus_manifolds.pdf
    • http://zomolejefej.mywebcommunity.org/ford_mustang_mach_1_price_in_india.pdf
    • http://indohealth365.online/kerbal_space_program_kis_kasc4ob1.pdf
    • https://static.s123-cdn-static.com/uploads/4383913/normal_6007d9f949242.pdf
    • https://cdn.sqhk.co/kavuluxaja/Mhjgqha/exorcist_meaning_in_marathi.pdf
    • http://gejejasofubi.mywebcommunity.org/cynodon_nlemfuensis.pdf
    • https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/3378697.pdf
    • http://shoop-fe.ru/oral_b_5000_toothbrush_reviewa8rso.pdf
    • https://cdn-cms.f-static.net/uploads/4387037/normal_60301096d8224.pdf
    • https://cdn.sqhk.co/kowumutajaw/rvQiijc/assassin_s_creed_syndicate_xbox_one_digital.pdf
    • http://scrlt.xyz/sims_4_lunar_zodiac_challenge7iuxi.pdf
    • http://gelchlen.fun/grohe_bathroom_faucet_cartridge_replacement2zf5r.pdf
    • https://xamelanaf.weebly.com/uploads/1/3/5/3/135331914/zazeb-fopemepi-demafumefap.pdf
    • https://cdn-cms.f-static.net/uploads/4465133/normal_60501fb1a7075.pdf
    • https://cdn.sqhk.co/retagigimusa/fOgfgij/hauser_benedetta_caretta_husband.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/widiku/77440475912.pdf
    • https://s3.amazonaws.com/wuvepilamamuse/mafuzelotimilotoje.pdf
    • https://s3.amazonaws.com/mekonulegipero/jowubegatemiji.pdf
    • https://s3.amazonaws.com/zinudipir/amazfit_bip_custom_watch_faces.pdf
    • http://ruruwuvatokatal.onlinewebshop.net/virafonafikubiwebigaf.pdf
    • http://ziwemasux.myartsonline.com/62013438164.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_off00011606.bin
56b97b860bb5ae4079f1d8e2068313327ef296e377e293358ed6883c3f51bb88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11606 5408 bytes
font_01_sfnt_off0001283f.bin
dc00b7b42027ed779a55da7031630fb55f44b46ea168572eb0bbfd978b25251c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1283F 11488 bytes
font_02_sfnt_off00014f5d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F5D 4324 bytes

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