Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f73117368e60a0…

MALICIOUS

PDF

76.2 KB Created: 2020-12-30 04:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1c32a7c9e2b19e310996945d04c9588b SHA-1: 90d8cc85433c1a065e35226bbf41c62942505142 SHA-256: 90f73117368e60a071e3dcb59975e1b8603b1ba153931bc47f2d505be565d4a4
156 Risk Score

Malware Insights

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

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 0.9997

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://traffking.ru/strik?utm_term=weekend+jobs+near+me+for+17+year+olds PDF link annotation
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/689241.pdfIn PDF document text
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/57c81db.pdfIn PDF document text
    • https://fagozeku.weebly.com/uploads/1/3/4/5/134506452/kesiranovuw-binodadase-ritolavofow.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/jghdqGo/1842637728.pdfIn PDF document text
    • https://giboramogu.weebly.com/uploads/1/3/4/6/134627050/2985531.pdfIn PDF document text
    • https://rusezoxebob.weebly.com/uploads/1/3/4/3/134355184/bijugadi_nadapixoxin_viked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pozokimepe/brave_frontier_2_trial_4_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/tikorunewuwij.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/6421361637.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/sizunuxezotuvir.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/43828785468.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/suzoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/fannie_mae_borrower_certification_and_authorization_form.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE088 5240 bytes
SHA-256: dad136e85d6de6b70c0dd11584f8a7d43eac458dfeab8acee0b1a56f6406deb4
font_01_sfnt_off0000f263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF263 10424 bytes
SHA-256: 3124520509bcec2ad642bd2d06bfdc468d76bce08e2caecf69d8735ba5171e60
font_02_sfnt_off000115fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115FB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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