Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6974980cb90732…

MALICIOUS

PDF

83.1 KB Created: 2021-03-20 11:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 93ad092ab5daf15b0fe40e78b7108100 SHA-1: c8d48dffe3baede4ace2cd633ae29a2a618853a4 SHA-256: 5e6974980cb90732ce873949adb599594b3f747d9978511f0dbdfdd6e26482c0
126 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 phishing or trojan payload. It contains numerous embedded URLs, with one prominent URL, 'https://gimoguvi.ru/strik?utm_term=which+fish+is+forbidden+in+islam', appearing to be the primary lure. The document body, though heavily obfuscated, suggests a search result context, aiming to trick users into clicking the malicious link. No scripts were extracted, but the PDF structure and embedded URIs strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/strik?utm_term=which+fish+is+forbidden+in+islam PDF link annotation
    • https://cdn.sqhk.co/pulisamog/jhdgigd/derugelenas.pdfIn PDF document text
    • http://suvuxivenorum.mypressonline.com/43656522213.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/tuck_everlasting_book_vs_movie_essay.pdfIn PDF document text
    • https://cdn.sqhk.co/sirojenu/iZIqmia/dragon_mania_legends_legendary_breeding_guide.pdfIn PDF document text
    • http://gewututikame.getenjoyment.net/55225254822.pdfIn PDF document text
    • https://cdn.sqhk.co/dijadive/jflzjjz/25755740897.pdfIn PDF document text
    • http://gizigevom.mygamesonline.org/addition_and_condensation_polymerization.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/lista_de_verbos_irregulares_en_frances_conjugados_en_todos_los_tiempos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_866e419722874a31a55e07b1b6de741b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/51189783294.pdfIn PDF document text
    • https://528a8416-53f4-4693-bcf0-540471887af1.filesusr.com/ugd/c3aa89_677f78ab5a3a439da488fbcda0882ae4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/63457647565.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/whirlpool_cabrio_washing_machine_wont_spin_or_drain.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/14786511636.pdfIn PDF document text
    • http://witesenigo.atwebpages.com/xovuwetokuvap.pdfIn PDF document text
    • https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_53582a1f83ba4f2ea5757894013c7484.pdf?index=trueIn PDF document text
    • https://856cb5e6-6c81-45ce-9604-b57907a15cd2.filesusr.com/ugd/cc3ca9_982047c57aec4e0391ea868c953298b2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xarojapi/why_is_music_and_movement_important_in_child_development.pdfIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_b1c9d897ac974d8795dbdc2e6d935bb4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/23696513018.pdfIn PDF document text
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_57d9c1ac3d8d4c5bb184e6da9fc70e35.pdf?index=trueIn PDF document text
    • https://1628ddcf-e301-416d-9649-d9339b85441b.filesusr.com/ugd/0b1079_5156b848049a4a1dbcb4a7c236469e64.pdf?index=trueIn PDF document text
    • https://18b09f4e-de4d-4c1b-9fe6-be55c63b1c00.filesusr.com/ugd/cd81e9_541f4d06d54841b4b047728026e0a1e6.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10654 5416 bytes
SHA-256: d0cbbac11d5b364865ab2ed4385363e36cbf082272892cb7df5499fbc0403b97
font_01_sfnt_off000118a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A4 11840 bytes
SHA-256: 2528fec0c00da36fb1fe63abfc37e5785b666636147b429e625bb788926d874d