Malicious PDF — malware analysis report

Static analysis result for SHA-256 82456ad3dd407342…

MALICIOUS

PDF

78.5 KB Created: 2021-03-20 22:19:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a67944b3162125c392b05f8ffe1e901e SHA-1: 8235dfc047f5d57e38d76a1936f610a8e14a6fb3 SHA-256: 82456ad3dd4073426a8a9494572c304eb4f7336c4c39cf59671e5d6905eef9d4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating an embedded external URI. The document body, though heavily obfuscated, suggests a lure related to recipes. The primary IOC is the external URL, which is likely used to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=my+cafe+recipes+and+stories+cheats PDF link annotation
    • https://cdn.sqhk.co/gizoxemovefi/dGGCAsJ/weather._com_tropical_storm_laura.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454303/normal_5ffb2dae56ca0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497685/normal_5fef905263b50.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/kiegeoL/lolonazef.pdfIn PDF document text
    • http://petersikdar.com/nujuzogikavexori77nit.pdfIn PDF document text
    • http://trycabinets.xyz/how_do_you_sign_up_to_make_money_on_tiktokjarq8.pdfIn PDF document text
    • https://cdn.sqhk.co/sifujubagis/fdihyij/cross_stitch_letters_patterns_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459468/normal_5ff095cd74790.pdfIn PDF document text
    • http://fitdieta.com/bokixadigigjjk4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_6027bd8347578.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372080/normal_60078c7205bee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404740/normal_5fe9297274d12.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f0f6df9-8ee2-4863-ade4-8c2291ddd906/thidwick_the_big-hearted_moose_activities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bba5e88-b222-412c-b697-1c783a580f93/dirubopavix.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/91324638131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd326f3-c0ba-471f-9473-6905c4d2ffa5/13318886661.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/fimidu.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_off0000f56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56C 5316 bytes
SHA-256: ed1f7fb0bfc07c4e6b61c726194a9e86115a72311adf3f49ad4092a73985b823
font_01_sfnt_off00010794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10794 11060 bytes
SHA-256: 96c5360006fff38a23f7b507ce82536bd8f7809baad996ad371e26db79d940d9

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