Malicious PDF — malware analysis report

Static analysis result for SHA-256 0488eddcb558d9ec…

MALICIOUS

PDF

84.4 KB Created: 2021-03-01 12:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1c3d7e09219742bc9432e0ef1c520aba SHA-1: 35d79e801393b8ce3ea1e3c08346152d1b1674ec SHA-256: 0488eddcb558d9ec5ecb9d283007a47c8258bf25b262cbf7190f5f1fcb8c71af
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/wix?keyword=pneumaticcraft+pressure+chamber+guide'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly support a malicious classification, likely involving phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://crophysi.ru/wix?keyword=pneumaticcraft+pressure+chamber+guide In PDF document text
    • http://the-job.ru/tifavifeduxifamadazazi41w02.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/YFBaMih/pizivekiserokosatuz.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/mazejikivunipuz.pdfIn PDF document text
    • http://creditscorefix.info/how_to_change_ink_cartridge_on_an_epson_wf-263023xc3.pdfIn PDF document text
    • http://domsale.xyz/punctuation_worksheet_8th_gradewm2yv.pdfIn PDF document text
    • https://cdn.sqhk.co/wogirujut/dgdb8ge/sniper_jungle_commando_counter_attacks.pdfIn PDF document text
    • http://mirror-x.org/rebovezunelidulawum6xebc.pdfIn PDF document text
    • https://cdn.sqhk.co/zinumazak/ehaVKrJ/us_canada_border_crossing_covid.pdfIn PDF document text
    • http://laluwaraselolar.mywebcommunity.org/where_is_samsung_a51_manufactured.pdfIn PDF document text
    • https://cdn.sqhk.co/lagusive/cjiwBjc/meme_soundboard_pro_apk.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/new_practical_chinese_reader_2nd_edition_workbook_answers.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/95062129589.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fovezewi/92246479786.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/serobovulojogugikatik.pdfIn PDF document text
    • http://vexolofifete.atwebpages.com/6._encyclopedia_of_chart_patterns_by_thomas_bulkowski.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/adobe_photoshop_sinhala_tutorials.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/muxukakezorot.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/contract_administrator_progress_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/why_isnt_my_washer_starting.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/sorozunifimeb.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/acerola_pokemon_masters_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/devefik.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/sevaxamegomuboxel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001008a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008A 5448 bytes
SHA-256: de0cd9e6c3e5867ad170b53a98aac905267faeb1df441d259b6bd0d1848478a0
font_01_sfnt_off000112ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112CE 10172 bytes
SHA-256: 11f17092feb8d531e19a5700fdd991b2d1ab9020fcebd7d7b0b9093cc5b48813
font_02_sfnt_off00013593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13593 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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