Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5210c22fe812c27…

MALICIOUS

PDF

72.6 KB Created: 2021-03-23 22:29:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: cef888d6dc5a1adae4461de84edd0733 SHA-1: c64bdc602da1fd8780a1a69b8450ee9e22a3f566 SHA-256: c5210c22fe812c279c0cfd8e791a797de37ad8840419c96f874ebd20fd059fcf
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. It contains numerous external links, many pointing to disposable hosting, suggesting an attempt to redirect users to malicious websites. The document body, though heavily obfuscated, appears to be a lure related to 'Sony remote control codes list', likely to trick users into clicking malicious links.

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 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://lozipotod.ru/wix?keyword=sony+remote+control+codes+list PDF link annotation
    • https://nivumumati.weebly.com/uploads/1/3/4/7/134703955/darejanelugabiburej.pdfIn PDF document text
    • http://peludofnor.fun/how_to_wall_mount_infant_optics_dxr-83i1iz.pdfIn PDF document text
    • https://wisowoturap.weebly.com/uploads/1/3/1/4/131453432/zopadajeru_xirak_voxisa.pdfIn PDF document text
    • https://vifixizunegivu.weebly.com/uploads/1/3/4/3/134349865/bf6ec2c4e744.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/bavizujowug-dezofupo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367923/normal_5fddb35063ce4.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/metabolic_confusion_diet_planyj20q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5ffc0d910ab5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462379/normal_5fcd3103616d8.pdfIn PDF document text
    • https://milalidit.weebly.com/uploads/1/3/1/4/131437162/zolipinidijinuzuporu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447647/normal_60343e619031e.pdfIn PDF document text
    • http://cookwellbakewell.com/kasoxuxuxefifiz66m0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_600eb6bd4fef6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412378/normal_6028173c084d9.pdfIn PDF document text
    • http://erethiztzj.space/suritivupiwefowu4e9w6.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://uploads.strikinglycdn.com/files/eb11247f-6c0e-4cb7-8735-46b7a652d453/onyx_245_balance_board.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0015dff6-da25-4f7a-ad22-50ff79391a04/92298900631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc63bbd-907d-4b29-8144-943c53a0d441/what_are_the_three_types_of_warfare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d6cd40f-4a36-44e8-94c7-c028db0349dc/dizutuxemokoruzavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e3b97f2-a855-4f35-95a7-fb0e7592ed16/25340082680.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_off0000d358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD358 4868 bytes
SHA-256: 2bf9b70bd222fa289cd73f859de9ede0c26b74d891148058f3f524846da0e936
font_01_sfnt_off0000e3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C4 10356 bytes
SHA-256: 6d7943232e7a4ced3cb331883a48b12b30c07fbd80645508302f9e55d19e6921
font_02_sfnt_off00010734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10734 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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