Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03d4fd458b9c28c…

MALICIOUS

PDF

74.3 KB Created: 2021-01-30 05:09:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 40d2efd3d52f89d7c0ff130bb2ee5495 SHA-1: 22f96cb704d7bdf8eb2624c910693fb3b2c84e15 SHA-256: d03d4fd458b9c28c49f1dc7301ff1d0a1992a45fb357c4a02afc2a3f7ffe8cc4
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, characteristic of a link farm or SEO spam tactic, designed to drive traffic to potentially malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, with the PDF being identified as a phishing trojan. The embedded URLs and the document's structure suggest it's part of a phishing or malware distribution scheme.

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 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://jottigo.ru/aws?utm_term=brian+tracy+books+in+urdu+pdf PDF link annotation
    • https://xidekudogigut.weebly.com/uploads/1/3/4/6/134683706/06729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486987/normal_601485c84150b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420459/normal_5fcafd873c6c8.pdfIn PDF document text
    • http://ifeelgood.club/99961046085ez6an.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479435/normal_60038dbcae9f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5feb02c27adcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5fe6b071c5ec5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408346/normal_5fff23cd55800.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407804/normal_5fdb891982ccc.pdfIn PDF document text
    • http://robertferrell.net/human_karyotyping_worksheet_answerscma1x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446499/normal_5fe015c37321f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388163/normal_6002379b85803.pdfIn PDF document text
    • http://wonder-ita.fun/text_message_notification_not_working_iphoneqynuw.pdfIn PDF document text
    • http://itslm.fun/lady_slipper_orchid_rdr20zhs0.pdfIn PDF document text
    • http://steelsho3.club/fanawiwonifenuxnyt5o.pdfIn PDF document text
    • http://liketime.fun/penn_330_gti_specseut40.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00010072.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10072 18008 bytes
SHA-256: b4039c30de2e8fd46f70bf3fadf90860d2b97ff841330c74669644d0e870eb0d
font_00_sfnt_off0000ca0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0A 5472 bytes
SHA-256: 93eb2eee9c5a4682cf29e638b14a1b43edee53002d6eab193a2019bb97acb595
font_01_sfnt_off0000dcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB6 10380 bytes
SHA-256: 09c54f65c0a9b2a1195d7d6a44480415701846e86812cf45a8da81a81a7220e3

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