Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc38574be80f797…

MALICIOUS

PDF

70.3 KB Created: 2021-02-19 02:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6efa0f55c44ad0795d9bf8f093a4b890 SHA-1: aaaaa42c1126d0715d0712a6abd56203e169d4b4 SHA-256: 1cc38574be80f797e2ca77581611f1461e86f218009f60df00f854e269b34164
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely leveraging embedded JavaScript for malicious actions.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=nunca+dudes+de+mi+amor+por+ti+poema PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446395/normal_5fd914faa902f.pdfIn PDF document text
    • https://suzeziji.weebly.com/uploads/1/3/0/7/130739492/lesetuwujekak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407724/normal_5fe8bcda9407f.pdfIn PDF document text
    • https://kipokemob.weebly.com/uploads/1/3/0/7/130738996/tasenun_mufovu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476002/normal_5fe52744d55ce.pdfIn PDF document text
    • https://gilulunerokife.weebly.com/uploads/1/3/5/2/135296548/bigusitikotitaze.pdfIn PDF document text
    • https://lupabarudu.weebly.com/uploads/1/3/1/3/131398308/tifopog.pdfIn PDF document text
    • https://roturusuwanowus.weebly.com/uploads/1/3/4/3/134363773/gurodolapetup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_600bb73f9b411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_602c3f06da3d8.pdfIn PDF document text
    • https://nodararikerat.weebly.com/uploads/1/3/4/8/134885074/mamunisaloborukupita.pdfIn PDF document text
    • https://zudalutotazif.weebly.com/uploads/1/3/1/3/131379026/4365953.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404739/normal_5ff6ae8eae7d5.pdfIn PDF document text
    • https://wifusudufasebo.weebly.com/uploads/1/3/5/9/135992472/seferogimaxabab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387056/normal_5fdc487fbbc7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452846/normal_5ff3d81f9d224.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450243/normal_5ffbaec2dc35d.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/legobegutulo/nofuguzarimo.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_off0000c7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7B4 5040 bytes
SHA-256: 94760d41765184ae98ee06ed62d854e9e6a06df2f28c4350791725467a0a8e6f
font_01_sfnt_off0000d8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B1 10736 bytes
SHA-256: e3cf3ef4f0bd3b3a298b078c9bd8fcee4a70ec1600801435cd77b4829b10a8ad
font_02_sfnt_off0000fbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.