Malicious PDF — malware analysis report

Static analysis result for SHA-256 991a9322098f2272…

MALICIOUS

PDF

68.5 KB Created: 2021-03-18 14:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d743749cd3881905ea43612a1592445a SHA-1: 923f6a50346db3d40fc475d0155c3ed955bf29d8 SHA-256: 991a9322098f22724d82cc635c7244fb886dc01c5016e8ae493f65a9a3e063ab
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect to a phishing site. ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence indicate a malicious document designed to trick users into navigating to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://xezojetit.ru/strik?utm_term=black+and+decker+workmate+type+1+spares
    • https://rijigajigife.weebly.com/uploads/1/3/1/8/131856487/bepijomimul.pdf
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/ziduwelidolorobojoz.pdf
    • https://cdn.sqhk.co/fapolokid/iR63hfy/46853955099.pdf
    • https://cdn-cms.f-static.net/uploads/4392451/normal_6048c22b17493.pdf
    • https://cdn-cms.f-static.net/uploads/4419650/normal_6050241e81440.pdf
    • https://static.s123-cdn-static.com/uploads/4446280/normal_5fe4fee27a2f2.pdf
    • https://static.s123-cdn-static.com/uploads/4474992/normal_5ff7644f14d93.pdf
    • http://zugezufamuluki.iblogger.org/vobosa.pdf
    • https://cdn-cms.f-static.net/uploads/4417137/normal_604cbebe68b91.pdf
    • https://static.s123-cdn-static.com/uploads/4408864/normal_6007fa9445869.pdf
    • https://static.s123-cdn-static.com/uploads/4392199/normal_5fed5f2bd0256.pdf
    • http://pefaninax.22web.org/after_2_italiano_download.pdf
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5ff9a3f8c4881.pdf
    • https://cdn-cms.f-static.net/uploads/4371808/normal_6026415832d60.pdf
    • https://static.s123-cdn-static.com/uploads/4482631/normal_5fde844a6fbcf.pdf
    • https://cdn.sqhk.co/rovovuroj/dIjfjc9/mokaseros.pdf
    • https://cdn.sqhk.co/wogefosa/4FqYmhd/54830031304.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pasawe/programme_botola_pro_2019.pdf
    • http://xenuviwiduf.epizy.com/metamorfosis_de_la_mariposa_para_nios_para_colorear.pdf
    • https://s3.amazonaws.com/tarizirefevifab/surexopamikute.pdf
    • https://s3.amazonaws.com/jedaxopopuko/fogsi_guidelines_pph.pdf
    • https://s3.amazonaws.com/didowugorokirug/air_force_academy_chapel_wedding.pdf
    • https://s3.amazonaws.com/gopifu/22726497781.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_off0000cbba.bin
171d859a0d603b38d08a18deba09534445f9e8a14f2497170e594b421701d160		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBA 5580 bytes
font_01_sfnt_off0000debc.bin
9f282113e4ecddcc1d80333cce3315862280f0b21b8a7fc6d759b54cdf6387d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBC 10632 bytes

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