Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc5fdc2ae273939…

MALICIOUS

PDF

185.9 KB Created: 2021-04-02 05:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2279df77aa7891e8a19b0b9e05f81907 SHA-1: 10da668d338cc263c13c0273a5d835c23b299d38 SHA-256: 5cc5fdc2ae273939e83365e4aba48d32c6133fe00a824000e7768f6fecf6165c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://golowaki.ru/wix?keyword=the+age+of+imperialism+refers+to PDF link annotation
    • http://pipvip.ru/hp_6700_printer_driver9nus5.pdfIn PDF document text
    • https://bazifimu.weebly.com/uploads/1/3/4/6/134661545/vasevapimemaropat.pdfIn PDF document text
    • https://mijutadozas.weebly.com/uploads/1/3/4/5/134590660/madaxominep.pdfIn PDF document text
    • http://bogplaktnc.fun/captain_crunch_crunchling_adventure_mac0ufmj.pdfIn PDF document text
    • http://kprovk.xyz/how_to_build_a_lego_house_for_beginnersbxq3v.pdfIn PDF document text
    • https://suvenalopevoku.weebly.com/uploads/1/3/4/5/134510495/ronokodapa-denoteviwok.pdfIn PDF document text
    • http://draiwenstore.online/windows_batch_for_loop_execute_commandqkhpc.pdfIn PDF document text
    • http://swiss-gear.store/temifex56fu.pdfIn PDF document text
    • https://fozirufimagez.weebly.com/uploads/1/3/0/9/130969558/800cc5da.pdfIn PDF document text
    • http://dalnoboyi.xyz/kodapazugokodotil4nww.pdfIn PDF document text
    • http://save50.pro/xurozujurajepidifsbzfh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/html_templates_basic_free.pdfIn PDF document text
    • https://be8f41f0-9ddd-434d-ab6d-aa755a40b80d.filesusr.com/ugd/726d9c_6cec31a5ed394144ade6ef5cc10973b6.pdf?index=trueIn PDF document text
    • https://c84ffda1-e72a-45fa-8ce8-a771970cf326.filesusr.com/ugd/9fd656_73f75621c13d45ef9d521d6caa550351.pdf?index=trueIn PDF document text
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_3e80106a217a4db69c970e7105679963.pdf?index=trueIn PDF document text
    • https://38c64f87-0506-4925-a3a1-425743e24937.filesusr.com/ugd/386d45_8e58f2afebb4499ca017258f53c2f0b7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/loneminovu/86811536539.pdfIn PDF document text
    • https://e3055f73-6236-423b-b810-4bc1a15f300f.filesusr.com/ugd/fa12d1_620cf706efdb4ac499630d6d75c8e020.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/hague_watermax_parts.pdfIn PDF document text
    • https://0df22b04-17ae-4e65-9af8-3af4445b4601.filesusr.com/ugd/71fd01_3b11cc4bb5834265ad6390f04d88ea04.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000286f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x286F1 3772 bytes
SHA-256: 9069989840dd2057372ffbc9900f87d4f900e42019d09e9b32bcccb29f287fc4
font_01_sfnt_off0002944b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2944B 5264 bytes
SHA-256: 433ce9d7f58b6903d44a6d86541025b855f525671f1d5fb1b530eb5955c5e769
font_02_sfnt_off0002a60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A60B 17080 bytes
SHA-256: d71b8bf1760d94369e77b6eb922c7073f84233c0a2f2a43d201457a7e54e9871

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