Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3f20f4985344e0…

MALICIOUS

PDF

78.1 KB Created: 2021-02-27 15:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 24c70284274c3af3553cd364ce713701 SHA-1: 082f8257a0db659f27d1bcac3a413817a00967d4 SHA-256: 9d3f20f4985344e0559f1de68dc8a5124bdc18e7e8f62d8a9d97692e7ee1741f
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://nipisod.ru/award?keyword=errorcode%253D-4461+sqlstate%253D42815+date` suggests a phishing or social engineering lure, likely attempting to trick the user into visiting a compromised site. The document body, though heavily obfuscated, contains strings related to error codes and SQL states, reinforcing the lure's pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=errorcode%253D-4461+sqlstate%253D42815+date PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452608/normal_5ff183f2ebcfb.pdfIn PDF document text
    • https://wuxivebumuvarog.weebly.com/uploads/1/3/1/0/131070366/3198501.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/90947234368.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/23605006545.pdfIn PDF document text
    • http://martakkord.ru/totarez5krgv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_6028aadf4582d.pdfIn PDF document text
    • http://vvd.bar/association_familiale_mulliez_annual_report5vzp9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482870/normal_6022effe7cfe7.pdfIn PDF document text
    • https://cdn.sqhk.co/remonupode/bngdhjb/86094310174.pdfIn PDF document text
    • https://cdn.sqhk.co/gegatuzikat/KVyiShb/shoujo_city_3d_apkpure.pdfIn PDF document text
    • https://dulebolipema.weebly.com/uploads/1/3/5/9/135997598/9ea79d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456166/normal_5fd34fadd45ee.pdfIn PDF document text
    • http://igcopyrightverify.com/situfasawudatekipokk9t71.pdfIn PDF document text
    • https://vobasonuniba.weebly.com/uploads/1/3/4/6/134668907/xivul.pdfIn PDF document text
    • https://cdn.sqhk.co/xusorawoka/giiboCF/kungfu_master_heroes_2020_sub_indo.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/gdhcThe/sonny_with_a_chance_cast_reunion.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/gosete/16511339277.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/ch_play_apk_tv_box.pdfIn PDF document text
    • http://rojanesifilagu.myartsonline.com/zidimefowefaba.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/kalyanam_kamaneeyam_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/50440978731.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/the_dilbert_principle_book.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_off0000e350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE350 5836 bytes
SHA-256: 61cfca34b8456cb9288a167663691cc259edd53077b504b90d225c1d4ed0770f
font_01_sfnt_off0000f75b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75B 15748 bytes
SHA-256: 7c905ebc8cd4ae872aaf45beab4f35fa0bb728ebf4029da4d07f025ef74abda1

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