Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e62a9672b62229b…

MALICIOUS

PDF

71.4 KB Created: 2021-03-22 20:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: aa59d42c0f75fb85f1469fb8cd078187 SHA-1: c02b113989316f4f3252b61004a7cbc08596ec02 SHA-256: 7e62a9672b62229be0b50e3e47a8aa0114fdbcb2f46239a5141ef677217e0bee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that is presented as assembly instructions for a 'Crosman 760 pumpmaster'. This URL, 'https://jacksth.ru/strik?utm_term=crosman+760+pumpmaster+assembly+instructions', is highly suspicious and likely leads to a phishing page or malware download. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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://jacksth.ru/strik?utm_term=crosman+760+pumpmaster+assembly+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487647/normal_5fd7a4594cbbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375700/normal_5fe28ae74f523.pdfIn PDF document text
    • https://vudulami.weebly.com/uploads/1/3/5/9/135964857/bf15f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374853/normal_5fdc4c40e55c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412380/normal_6003c0d71c763.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406481/normal_5ffabf341f77e.pdfIn PDF document text
    • https://cdn.sqhk.co/pawekenu/ad9jhu4/advance_auto_parts_coupon_in_store_printable_2019.pdfIn PDF document text
    • https://niniteju.weebly.com/uploads/1/3/0/8/130814631/janesuror.pdfIn PDF document text
    • https://zisibunekotif.weebly.com/uploads/1/3/4/9/134902626/90a7192e0.pdfIn PDF document text
    • http://forexgeeks.net/delajeturuxalajudefikdrplp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366365/normal_5fccd10a605e5.pdfIn PDF document text
    • https://sabigojepesadiz.weebly.com/uploads/1/3/2/8/132814096/vafemujejefip.pdfIn PDF document text
    • http://copyright-supporthelp.com/does_lg_make_good_sound_barseufj4.pdfIn PDF document text
    • http://copyright-help-report.com/rijavuxifinore34bcb.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/36919659316ini7z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379369/normal_5ff5093a1161b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446784/normal_5fcacd0c4536d.pdfIn PDF document text
    • http://lovelyhouse.online/slither._io_hacks_download_free7tiko.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/pujizukofilixe.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/egfMCig/grail_knight_talents.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482645/normal_5fdc5fa48544e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446377/normal_603499e37777f.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/gzjjuhc/marshmello_helmet_diy.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/domegagowevag/lofosebopimebimowox.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/itc_cheltenham_bold_italic_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/34077935456.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_off0000d1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C5 5600 bytes
SHA-256: c638d9e1c65d3f0d24fde142082e3377ad628fb3f0972b3c4ae617341cf46b3b
font_01_sfnt_off0000e4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B6 12856 bytes
SHA-256: 6dfc59b453ebba345da0cae025ce45607501077cab578f95db809bd43df385f5

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