Malicious PDF — malware analysis report

Static analysis result for SHA-256 56692064162f0d26…

MALICIOUS

PDF

79.5 KB Created: 2021-02-04 00:37:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1057cffc74e0849c5f374d1834799a49 SHA-1: 7fc8ee23f553a4bcb68b1ea78bbbefcf96a8aabd SHA-256: 56692064162f0d269fb53fa2386c4aad51dfb377733b327ed78f1a4e8840481c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded content, though heavily obfuscated, suggests a lure related to keyboard layouts. The ML classifier and ClamAV detection strongly support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://yafferge.ru/aws?utm_term=assamese+keyboard+layout In PDF document text
    • https://cdn-cms.f-static.net/uploads/4490371/normal_60100f3a3ec87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_5fd10c4ebc12d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5fc9427050ced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470683/normal_5fcfb27939830.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408482/normal_60069c1b5f6ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414334/normal_5fe0fed215514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_5fd3509317d86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408881/normal_5fd33abc64c32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502268/normal_5fe20ac8bf6e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473954/normal_5fe8415a346ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496378/normal_5fd2d1a47a94a.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/wuxupewu/83148731684.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/england_flag_coloring_sheet.pdfIn PDF document text
    • http://gejujebiwibi.epizy.com/metformin_dose_pcos_infertility.pdfIn PDF document text
    • http://nazonuretowu.epizy.com/chemguide_carboxylic_acid.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/40339405971.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/november_2018_calendar_printable_template.pdfIn PDF document text
    • http://punejiva.epizy.com/futebuweguzenowav.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/27788454677.pdfIn PDF document text
    • http://suwuxuk.epizy.com/khatu_shyam_baba_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/71932507139.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/football_defensive_stat_sheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/ellucian_banner_reports.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B7 2888 bytes
SHA-256: c82bebd4b493aaaf84143f05ff6967641e6933e4069ecd51460b008fb5b9cf8a
font_01_sfnt_off0000def7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 5264 bytes
SHA-256: 41b9a2403fbe4fb59cae8815a1f069cbf8fc4d556ccb1714cdd3e8e586dc6067
font_02_sfnt_off0000f0ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CA 7504 bytes
SHA-256: 577117be97a547a42bf4bd84925e13ffac75ecf2f8e9da7b23bcb9222df04858
font_03_sfnt_off000109df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DF 11116 bytes
SHA-256: a6ebc478bff14fdf02aa009b878ad4d5a716178ed5b5cf2a5d2dcb82d75d322d

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