Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c0d54912e390cc…

MALICIOUS

PDF

83.0 KB Created: 2021-04-22 07:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a46587a59cf965aad160d120e12434a SHA-1: e8dd4cf2ed4d4c4dc0e6565565b5dc2495d86be9 SHA-256: e9c0d54912e390cc9b9ee7f73458545eb1c0f80585365995c6481d364f6adff0
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious document, likely a spearphishing attachment designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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-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://botokaw.ru/strik?utm_term=igora+royal+pearlescence+p9+5-29
    • https://cdn.sqhk.co/gusoguribus/jehahhS/zombie_222_battery_pack.pdf
    • https://wixotofipexux.weebly.com/uploads/1/3/5/4/135400714/wafafadozisusubomede.pdf
    • https://xovonugobo.weebly.com/uploads/1/3/4/6/134688771/tuvunokida.pdf
    • https://static.s123-cdn-static.com/uploads/4421939/normal_60030de35ce72.pdf
    • http://pikejofopon.mypressonline.com/english_speaking_course_book_download.pdf
    • https://cdn-cms.f-static.net/uploads/4409628/normal_60240d2b47d3a.pdf
    • https://cdn.sqhk.co/wubukuxivupe/jcyIifE/bojigugarakud.pdf
    • https://cdn-cms.f-static.net/uploads/4368998/normal_6025e3783ed98.pdf
    • https://vilomaranetuxer.weebly.com/uploads/1/3/4/5/134502128/lixalebedegewag.pdf
    • https://zezodejesamibiz.weebly.com/uploads/1/3/1/1/131164097/sovanodi-nisok-lebuzotosekam.pdf
    • https://cdn.sqhk.co/disumuneriva/lmROEii/jutopiberewelexafekopivi.pdf
    • https://cdn-cms.f-static.net/uploads/4493873/normal_5fda89ae45c7e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wusone/best_lens_for_portrait_photography_nikon_d750.pdf
    • https://s3.amazonaws.com/vunizi/sunita_baby_dance_video_song_mp4.pdf
    • https://s3.amazonaws.com/zoxewudunigus/57425134895.pdf
    • https://s3.amazonaws.com/patotale/duteritirofesogilajef.pdf
    • https://s3.amazonaws.com/gozifep/gamujijunigo.pdf
    • https://s3.amazonaws.com/xupizewuxere/why_wont_my_keurig_2.0_work.pdf
    • http://sajulugebimisu.myartsonline.com/daffodils_william_wordsworth_poem.pdf
    • https://s3.amazonaws.com/risalenefazozo/botekozalowibasenowimal.pdf
    • https://s3.amazonaws.com/tedowafomaru/tds_challan_form_280.pdf
    • https://s3.amazonaws.com/sazomo/how_do_i_reset_my_mr_coffee_maker.pdf
    • http://gixopiv.onlinewebshop.net/64597437865.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_off00010363.bin
e5f0905806ce834801d2ef3d91a74ffc8dacfdde0b149da58a3e3a1797b8b963		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10363 5584 bytes
font_01_sfnt_off00011684.bin
2e2d5f6c2cfeb358830f4e72d98aa9472c08a9d0b8f69f169e3484353adadc1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11684 11752 bytes

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