Malicious PDF — malware analysis report

Static analysis result for SHA-256 807e135aac1e9a79…

MALICIOUS

PDF

81.3 KB Created: 2020-11-19 21:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0f30aeb95fa8372c33e41ca62c89e002 SHA-1: 8be2ba08ef02d4f093a6668b805cb936f0fa473c SHA-256: 807e135aac1e9a79d18328006ddc2de024e9b5ee8958bb13e5abba2aa13a592c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, including one to 'traffnew.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The document body, though heavily obfuscated, contains text related to free movie streaming, which serves as a lure to direct users to these malicious sites.

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://traffnew.ru/strik?utm_term=watch+cloverfield+online+free+megavideo PDF link annotation
    • https://dunujamovexen.weebly.com/uploads/1/3/4/3/134361976/bupija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5f9d82f9433ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fa190111150a.pdfIn PDF document text
    • https://guxolufesa.weebly.com/uploads/1/3/4/4/134468064/773d4de96c2665d.pdfIn PDF document text
    • https://mivopolidenez.weebly.com/uploads/1/3/4/3/134349928/nireritutetife-mebomobizapux-ribipi-kuguzini.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386087/normal_5faa24880e736.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/xobalibipoxa_kubuxajunuzot.pdfIn PDF document text
    • https://kugodago.weebly.com/uploads/1/3/4/4/134491336/valewipe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/19b10c35-c305-4c5e-9f74-762f4bf60779/rurisafagamereb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5a97f36-c2bb-4512-9c5b-bc805743b4da/apple_ipod_touch_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af2fe616-960d-4e89-8083-4a3888cf7cea/xumavejimasul.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_off0001025c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025C 5332 bytes
SHA-256: e46c27a28a42697d022c071ca695f0b38309ebcf70372fe370ea1e50742e6eef
font_01_sfnt_off00011461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11461 10520 bytes
SHA-256: 4e84376cacd95ecebcf3401f5ccd9157f100f9a307bd799760ce1acf42294db4

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