Malicious PDF — malware analysis report

Static analysis result for SHA-256 639c0abb2df3907a…

MALICIOUS

PDF

78.2 KB Created: 2021-03-02 23:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cd92fba4940f12a355a8047793f62c72 SHA-1: 98438b79b31f94b323134d257b867d9f1b7cb567 SHA-256: 639c0abb2df3907a0a2cc4f2c6a48c3792f143d7f26817697c6ae89bf2316d9c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic indicating a link farm designed for SEO manipulation. One prominent URL, 'https://resalured.ru/strik?utm_term=how+to+ground+directv+satellite+dish', suggests a lure related to satellite dish setup. ClamAV and ML classifiers strongly indicate maliciousness, specifically flagging it as a phishing trojan. While no scripts were directly extracted, the PDF structure and extensive external linking are indicative of a phishing or malware distribution attempt.

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://resalured.ru/strik?utm_term=how+to+ground+directv+satellite+dish PDF link annotation
    • https://cdn.sqhk.co/gituridewo/6VjjLia/45966351713.pdfIn PDF document text
    • https://mufosuxid.weebly.com/uploads/1/3/4/0/134040625/1165097.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/kurizik-nepotejenavafe-boxerimijula.pdfIn PDF document text
    • https://cdn.sqhk.co/mefivujosawo/D2GicLa/89569453445.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/gfbjdhc/kereguluse.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/dW7eMCN/como_recargar_gratis_a_cuba.pdfIn PDF document text
    • http://cyberlife.store/busaderalutibifivibliyc.pdfIn PDF document text
    • https://xemiwiwoxotewa.weebly.com/uploads/1/3/5/3/135325065/luzuzuwotoso-xogonobi.pdfIn PDF document text
    • https://wuraruxirike.weebly.com/uploads/1/3/1/4/131453605/xipefelut.pdfIn PDF document text
    • http://dolijajoz.22web.org/driving_test_signs_sheet.pdfIn PDF document text
    • http://varietystore.website/how_to_cheat_on_driver_license_testzwv61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sedowedi/mass_effect_andromeda_planet_scanning_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/ember_spirit_item_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/earthwise_lawn_mower_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/kirby_pointing_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/56247797242.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/rezomojalo.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/tiratepixadotanalaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/free_worksheets_adding_with_regrouping.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_off0000f43c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43C 5316 bytes
SHA-256: 1d164f664df66d87a537f395bddcbc96a9d7c7c7a1d79e09a8228699d85b91de
font_01_sfnt_off00010661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10661 10708 bytes
SHA-256: 942413b2ebbb7d05a5a0128f6423bc19928f6f912bd034b4344fec5656da21c4

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