Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4ebaa230c03d6f…

MALICIOUS

PDF

61.7 KB Created: 2020-12-20 09:01:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1803cc9be55c8f5bb594f62e304a7d67 SHA-1: 1759601a5b3117524b795b3559fa6dcb2b382275 SHA-256: ad4ebaa230c03d6f967ecd6dea030eba6513098b57909837160d4545732a235d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL that points to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, contains metadata related to the URL, suggesting a deliberate attempt to direct users to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=leonard+lake+reserve+ukiah+ca
    • https://static.s123-cdn-static.com/uploads/4409000/normal_5fcc28e7e9d68.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/08962463-7e7e-45cc-a6b1-c84b011c57ec/39164011957.pdf
    • https://uploads.strikinglycdn.com/files/0dfa205b-e820-4497-9593-9e141f6939b4/the_moron_test_answers_section_2.pdf
    • https://uploads.strikinglycdn.com/files/5f8976ae-6415-42f4-92b4-24caf32dba36/por_que_se_debe_cuidar_el_medio_ambiente.pdf
    • https://static1.squarespace.com/static/5fdd539cc66bff209e8009b6/t/5fde08c8a478394ebc94e26e/1608386760950/fofinunul.pdf
    • https://uploads.strikinglycdn.com/files/3cfc57ab-d2ae-428a-90ac-5c4bc8dd37a1/hells_angels_patches.pdf
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdcea9a621a1d54946a19e6/1608313498929/tegiji.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/elnea_kingdom_cheats.pdf
    • https://uploads.strikinglycdn.com/files/d224b62d-c113-4755-9a99-269a0504d8d9/anna_and_elsa_dolls_toddlers.pdf
    • https://uploads.strikinglycdn.com/files/d94bb7dc-871d-4899-85f7-fea4be0f0b36/82509151122.pdf
    • https://uploads.strikinglycdn.com/files/283544ee-d713-4fd7-bb87-7b5398877cba/average_bond_enthalpy_of_h2o.pdf
    • https://s3.amazonaws.com/jagux/alp_answer_key_2018_all_shift.pdf
    • https://uploads.strikinglycdn.com/files/c5ba6a0f-9a47-483d-8cda-f45de005d27b/zofoxozoravelegiziloto.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_off0000b220.bin
b19d73c92fb7ac04ba534ff92a717524817618e2543a065be96cc86b573c7bbb
pdf-font-stream PDF embedded font (sfnt) at offset 0xB220 5092 bytes
font_01_sfnt_off0000c36f.bin
5d4f84492c153ef6fbc635f2115aa9950ffc0b4e5717562d1453f82ee0f9bbb2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC36F 11844 bytes