Malicious PDF — malware analysis report

Static analysis result for SHA-256 096c48b9c2b66dfa…

MALICIOUS

PDF

75.8 KB Created: 2021-01-16 07:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f018d8a73a2d3c79b3ef3ac0d5cb2dab SHA-1: c60a3e89b848e4c68b09884043a4a4ee78b93826 SHA-256: 096c48b9c2b66dfa86e48911563929e587fb3bea751bb04ab13ec37240d36340
164 Risk Score

Malware Insights

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

This PDF document contains numerous external links, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, suggesting a malicious intent to drive traffic to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature, likely acting as a lure to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/123?utm_term=taylor+polynomial+calculator+wolfram PDF link annotation
    • https://zakazorexan.weebly.com/uploads/1/3/1/4/131407051/1100016.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/58e2f.pdfIn PDF document text
    • https://dinamulu.weebly.com/uploads/1/3/1/6/131637284/mudupugalaf.pdfIn PDF document text
    • https://jebapawobukil.weebly.com/uploads/1/3/4/5/134521284/7591885.pdfIn PDF document text
    • https://bexajaburise.weebly.com/uploads/1/3/5/3/135345802/zajaxitiboj_vumalomekev_saxurizabava_gonel.pdfIn PDF document text
    • https://nuburobu.weebly.com/uploads/1/3/4/6/134633580/3f8992e80d3.pdfIn PDF document text
    • https://livaganomin.weebly.com/uploads/1/3/4/3/134399079/c5a1c12f1176.pdfIn PDF document text
    • https://sonanibiforopo.weebly.com/uploads/1/3/2/7/132710732/pumep.pdfIn PDF document text
    • https://weniwekozeg.weebly.com/uploads/1/3/4/0/134012595/jubazakozefo.pdfIn PDF document text
    • https://jemexegotida.weebly.com/uploads/1/3/4/4/134464186/sarelugewifidi_faluwatuzazif.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/sikuva/upsc_online_form_date_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/forever_21_promo_june_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/55529172366.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/setigenupavadixibalon.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/como_destapar_el_bao_con_coca_cola.pdfIn 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_off0000d774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD774 5076 bytes
SHA-256: e2c3683728250bcb031fdeb43152cc172e8268c6398d8356c611846e63e45c13
font_01_sfnt_off0000e8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 5124 bytes
SHA-256: b715151e42c0660dbbc01108163f0a53a62f48bddc0236fd7b6748a9599b3ea6
font_02_sfnt_off0000fa65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA65 12084 bytes
SHA-256: 0d2b9cd95a139d8bf3012a30c2adb2918a718a91b88185a420a472a6813faa19

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