Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6cff3c68a9a4f8…

MALICIOUS

PDF

80.6 KB Created: 2021-03-22 17:35:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2da0f7167677a51afb8668a6da63ea64 SHA-1: e132eecddea472c08ce90ade9f5f6653d9a833b1 SHA-256: fd6cff3c68a9a4f84d136018af1ad1acdd0d8e186ca2521cecd1f96ad0251579
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1105 Ingress Tool Transfer

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to redirect users to potentially malicious websites. The primary URL, 'https://lozipotod.ru/award?keyword=jarchas+y+cantigas+de+amigo+pdf', appears to be a lure for users searching for academic content, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/award?keyword=jarchas+y+cantigas+de+amigo+pdf
    • https://cdn-cms.f-static.net/uploads/4417999/normal_603f2d1db8f54.pdf
    • http://matrixbicycles.com/how_to_write_an_e5_evalbhzgt.pdf
    • https://cdn-cms.f-static.net/uploads/4489730/normal_6044cc33380e9.pdf
    • http://rigudozefogo.mypressonline.com/atlas_copco_compressor_parts_south_africa.pdf
    • http://trackengine.host/wupijisimowegio48et.pdf
    • http://copyright-notice-ig.com/aoristo_grecog0dko.pdf
    • http://shoppermarket.online/nuvatesal0e8ur.pdf
    • http://flowerport.market/82810347604zqeyt.pdf
    • http://peuer.xyz/excellence_el_carmen_dominican_republic_reviews17yfp.pdf
    • http://mapotilij.mygamesonline.org/the_boy_in_the_striped_pajamas_study_guide_answer_key.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_9a62e1e70a9844948f660b94affb2ea7.pdf?index=true
    • https://aaca6425-83b8-4992-a49d-2ec8a2d61848.filesusr.com/ugd/304e3c_3c84853e6a4d4f618fb209a9a8c0a173.pdf?index=true
    • https://19508648-7f28-415f-8121-b57715dc1465.filesusr.com/ugd/9734e7_6d38f288a55b483abace1a84c4403503.pdf?index=true
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_6396e00a4de44ffda63861adac6b54b5.pdf?index=true
    • https://45b0b119-5f8c-43e7-b437-4e12d17c1c81.filesusr.com/ugd/3826db_79d39320b82749b0b300df22c21822cc.pdf?index=true
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_2caf20d99099434e9bddda4ecb9a1feb.pdf?index=true
    • https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_20f92bcb57d543438794c28e7da50032.pdf?index=true
    • 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_off0000f80a.bin
97558a49dfb2fda34a705b48cd333008a5dd46e65445139790a0c9dd79a076c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF80A 5628 bytes
font_01_sfnt_off00010b0c.bin
c1bb82cc34fb473278cdbdcf7342f7eb892676639cb95bae819c5c3d915743ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0C 12684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.