Malicious PDF — malware analysis report

Static analysis result for SHA-256 5481852645966424…

MALICIOUS

PDF

128.9 KB Created: 2021-01-25 08:03:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5106a9e3065fda0929eaa050fcc33c7e SHA-1: b3dee8fe1efb182be5f5bce58984e6dbeab1e181 SHA-256: 5481852645966424c707ef8d94488fc43c2182db62a8f3136c8ceea4a6f19a4d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The SE_PAYMENT_REDIRECT_LURE heuristic suggests the content is designed to trick users into changing payment details. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving a phishing or financial fraud scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://traffmen.ru/aws?utm_term=daniel+boorstin+the+image+pdf
    • http://organicnu.info/xowadaw3xhm.pdf
    • https://cdn.sqhk.co/wovegase/cYggQge/43456538362.pdf
    • https://static.s123-cdn-static.com/uploads/4454556/normal_5feec5187c3bd.pdf
    • https://static.s123-cdn-static.com/uploads/4419650/normal_5fc8159bd25ba.pdf
    • https://cdn-cms.f-static.net/uploads/4482860/normal_5fe9ca3186c90.pdf
    • https://static.s123-cdn-static.com/uploads/4479691/normal_5fe5e0dfd3813.pdf
    • https://static.s123-cdn-static.com/uploads/4416140/normal_600262a7170a5.pdf
    • https://cdn.sqhk.co/zawitagevute/ghhcQWK/baby_shark_1_hour_loop_download.pdf
    • https://cdn.sqhk.co/xomakonezema/oE4g3ge/35389502461.pdf
    • https://static.s123-cdn-static.com/uploads/4426972/normal_60013c7090722.pdf
    • https://cdn.sqhk.co/vagizabibo/ge1gets/revojozovegupurusixu.pdf
    • https://cdn.sqhk.co/kedezoge/aNggy3U/john_gba_emulator_for_android_free_download.pdf
    • http://grigolia-studio.ru/79953340751xc5bi.pdf
    • https://cdn.sqhk.co/sijiposago/gg8Cif9/75757708103.pdf
    • https://cdn.sqhk.co/disarelas/gjcDiaA/venekironi.pdf
    • https://cdn-cms.f-static.net/uploads/4383687/normal_600dff0bc6b4e.pdf
    • https://static.s123-cdn-static.com/uploads/4366374/normal_5fe4e483e375a.pdf
    • http://atomlinux.com/40531516103i3uvc.pdf
    • http://rte-ita.fun/english_reading_comprehension_for_grade_17tx3l.pdf
    • https://static.s123-cdn-static.com/uploads/4373517/normal_60051fdf971f8.pdf
    • https://static.s123-cdn-static.com/uploads/4421215/normal_5ff293bf11102.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001be71.bin
7b254e9c45976860d63028e5c7c82596ee93945d634d263060af9ad27a12685a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BE71 5592 bytes
font_01_sfnt_off0001d145.bin
b0b873486543cc3512188fadf27eb48d8caed74958b41ef092c2cebbaff97df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D145 10652 bytes

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