Malicious PDF — malware analysis report

Static analysis result for SHA-256 832054914e1ed416…

MALICIOUS

PDF

72.3 KB Created: 2021-02-28 12:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f0b2ec7ded684a25de07bf5a1d55d251 SHA-1: 2f83f62ed99e378ca906b9823fa668d5f0f1b9c5 SHA-256: 832054914e1ed4169eb41aecc5e9c4f21df704bbbb13d12160faf21fd0857b70
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of a large number of external links, suggesting an attempt to manipulate search results or redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and external link farm point towards a phishing or malicious redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://midufefew.ru/strik?utm_term=myers+david+g.+%25282014%2529.+exploring+psychology+%25289th+edition%2529.+worth+publishers+new+york PDF link annotation
    • https://cdn.sqhk.co/dawadetugas/idjeZBi/moruwelorizeseguzo.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/76043939226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476954/normal_60011463c4f6a.pdfIn PDF document text
    • https://zigibopujomez.weebly.com/uploads/1/3/5/3/135350997/vifazekuwamaj_ruxumu.pdfIn PDF document text
    • https://wonikisemuk.weebly.com/uploads/1/3/4/9/134902350/8865356.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/jRqFfig/lasipun.pdfIn PDF document text
    • https://dirusase.weebly.com/uploads/1/3/1/0/131070798/7943242.pdfIn PDF document text
    • https://sobomimaseneke.weebly.com/uploads/1/3/1/3/131379860/baniru.pdfIn PDF document text
    • https://lokulubebu.weebly.com/uploads/1/3/1/8/131856352/noxaze-dodiwoxetume.pdfIn PDF document text
    • http://pewadulojuba.mypressonline.com/16861342083.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458137/normal_5fe86770beb4c.pdfIn PDF document text
    • http://tedurelaseji.mygamesonline.org/48724179683.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/our_man_in_havana_audiobook_youtube.pdfIn PDF document text
    • https://gixorinimomavam.weebly.com/uploads/1/3/2/6/132695995/rurinaxepa-xefepogexuwa-xutaxagute-xukise.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/gezejoputiwinu/bunixaxumalufasorodaruf.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/picadora_de_cebolla_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/40346634226.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/guidewire_policy_center_tutorial.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/bulepuxukano.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/michael_jackson_thriller_full_album.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70C 6620 bytes
SHA-256: 6aabba4d19f7dbeddf53743ca5678944169ed3d472739366705f1f9fcfbae2d1
font_01_sfnt_off0000edd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD1 11028 bytes
SHA-256: 3bce9f1cf60d33e0ccf15ea0c1997d82b9533df8f23e3f601a16c40fea4de61c

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