Malicious PDF — malware analysis report

Static analysis result for SHA-256 a402415f06e5d18f…

MALICIOUS

PDF

117.6 KB Created: 2021-03-21 05:18:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f86dc334ffa319704045d0c5e703811f SHA-1: b1baa40d9ad6a0deed66efcc1c8c9f29c75983af SHA-256: a402415f06e5d18f48bc826281b1eb7f83ff17076107b98b0775a5d2b3a214d6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is also listed as a high-risk URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, contains text related to 'Asterix' and 'pdf', suggesting a lure to download a file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9899

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://jacksth.ru/award?keyword=asterix+all+comics+pdf
    • http://magexaxajatadog.getenjoyment.net/81064711647.pdf
    • http://zovofuti.mygamesonline.org/kumop.pdf
    • http://bukenisefino.mygamesonline.org/15813930700.pdf
    • http://jekeluxuto.mywebcommunity.org/13751755464.pdf
    • http://kazotapojiwi.mywebcommunity.org/kezadepupexowa.pdf
    • http://wumomotetidofe.getenjoyment.net/vuxareribivotomepimuz.pdf
    • http://fogejebimo.scienceontheweb.net/atmosfera_zanichelli.pdf
    • http://taxevidel.medianewsonline.com/moganar.pdf
    • http://wogivodugakovek.mygamesonline.org/50015461950.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/0cb9a940-b229-42e7-915f-df3a1ccd2f29/sadiselora.pdf
    • https://uploads.strikinglycdn.com/files/59669da3-2235-4b64-97a0-6d051650903f/why_is_pokemon_lavender_town_so_creepy.pdf
    • https://uploads.strikinglycdn.com/files/6c443e22-bbe3-4fe2-8c55-32dd8fa9fa96/19852306205.pdf
    • https://uploads.strikinglycdn.com/files/0b19952f-958c-43de-a389-3aa402aec562/it_will_be_great_meaning.pdf
    • http://vimixof.onlinewebshop.net/marantec_m4500e_remote_replacement.pdf
    • https://uploads.strikinglycdn.com/files/ad7d6aa9-dbd9-49ea-91be-7632c0016a9f/gufegejine.pdf
    • https://uploads.strikinglycdn.com/files/0bba1d1a-2ebe-441d-8acd-7fcbc1d653ae/dixir.pdf
    • http://tajavuminona.atwebpages.com/male_biblical_names_and_meanings.pdf
    • http://zijedan.atwebpages.com/what_is_air_force_one_worth.pdf
    • https://uploads.strikinglycdn.com/files/48ce59c9-52d5-4987-aae8-f58988171932/40785344168.pdf
    • https://uploads.strikinglycdn.com/files/0bb226ab-69d4-4950-8de7-028886ad0551/what_is_the_age_limit_for_the_air_force_reserves.pdf
    • https://uploads.strikinglycdn.com/files/a95a7f39-8e99-4d3f-ac39-cc8aee172bb2/kegidevizi.pdf
    • https://uploads.strikinglycdn.com/files/69ab37f1-fe9d-4502-bbb2-c1bec8663474/1_metro_cuantos_decimetros_son.pdf
    • http://vujapoguxesak.myartsonline.com/adjusting_journal_entries_in_quickbooks_online.pdf
    • https://uploads.strikinglycdn.com/files/03e66382-471e-4364-89f3-92a4eab0fc08/al_quran_in_bangla.pdf
    • https://uploads.strikinglycdn.com/files/d7d3b8d2-32ec-4c75-adfa-65b7d9bfabd4/50036968017.pdf
    • https://uploads.strikinglycdn.com/files/0c298d46-c9be-4528-a991-f62249e22a15/98444001789.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
    • http://sinhala.sourceforge.net/
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITS
    • http://www.gnu.org/licenses/gpl-2.0.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016b03.bin
dda8f3ad9c892a1e525ac5738dc65e3818e2a6f472fa58f3a29d387b389cac70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B03 5040 bytes
font_01_sfnt_off00017be4.bin
01eb68a2fd71ca83b3cb34ddd29e71bffee17c2b3a5d92f5d24fd7c1168ff588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BE4 4348 bytes
font_02_sfnt_off00018a9f.bin
0476162aacd754036a79741c2201e736d1717c6d5d11e1c9d7aeaf9a7d1e0846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A9F 14612 bytes
font_03_sfnt_off0001b908.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B908 4324 bytes

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