Malicious PDF — malware analysis report

Static analysis result for SHA-256 f301ffa60b23bf9a…

MALICIOUS

PDF

76.9 KB Created: 2021-01-06 05:02:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 73edcc847adfd456d460e977aca14df6 SHA-1: 2af587dc467f8d21b4019bb163c2b5911d8f8a5a SHA-256: f301ffa60b23bf9acdeba4b4b0588f91d68193b2792eb007381f22378fd4d018
156 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and ML classifiers, indicating a high likelihood of malicious intent. The PDF contains numerous external links, with one pointing to 'traffnew.ru', suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to potentially harmful content.

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://traffnew.ru/aws?utm_term=child+care+bed+sheets PDF link annotation
    • https://gazelavulokar.weebly.com/uploads/1/3/4/2/134265358/pimezavumalumawop.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/V8E3gi3/fresh_cut_flower_care_tips.pdfIn PDF document text
    • https://jaxedafotonomut.weebly.com/uploads/1/3/4/8/134885779/66476e684eb3.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwifudu/hfgenih/dragon_shadow_battle_super_hero_legend_hack_version.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/ea99eee.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/WXzGSyQ/soap_slicing_cutting_asmr_game.pdfIn PDF document text
    • https://risegexof.weebly.com/uploads/1/3/4/6/134661868/2204534.pdfIn PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/4d49f2fdd036f.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/nevowimo/simple_solutions_math_grade_5_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153e4d3f-393a-4adc-a224-9824d6074f69/strong_keto_bhb.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/76712704967.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/99083929803.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/gw2_deimos_tank_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/bhimrao_ambedkar_university_lucknow_online_form.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_off0000edd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD8 5072 bytes
SHA-256: c7c114c87d8b10463bac8392a5c97f673b78576bb5c7f93314598da96e0b0382
font_01_sfnt_off0000ff04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF04 12612 bytes
SHA-256: a3cc04fe5a603d9772c870694a479eeb66e8239931a8f306c1071302322c1bec

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