Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07259374ec000a9…

MALICIOUS

PDF

87.5 KB Created: 2021-02-26 07:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 8af2b75ddf33f98d6f38002b4706e4a1 SHA-1: 1530185f70f11789dddac5fedfbfaf337cbe86e4 SHA-256: f07259374ec000a9ada958b5cd0f44105adb43f82ee319cf3c6051f79f47fd4e
164 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains a large number of external links, suggesting a link farm or SEO poisoning tactic to direct users to potentially harmful websites. The embedded URL and the document body's keyword suggest a lure related to 'dna testing cost in canada' to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/award?keyword=how+much+does+dna+testing+cost+in+canada PDF link annotation
    • https://cdn.sqhk.co/bowazeduz/aEjhibX/duck_hunt_dog_game_over.pdfIn PDF document text
    • https://latoratepowubum.weebly.com/uploads/1/3/4/7/134713938/2423415.pdfIn PDF document text
    • https://cdn.sqhk.co/wukufazujuv/avjBHac/90369471305.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/hTxiaz8/bawakirifuxajajufiwozigu.pdfIn PDF document text
    • http://rovepofaji.22web.org/48987513640.pdfIn PDF document text
    • http://jetanevuv.iblogger.org/planet_coaster_guide_career.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/bopuxosavubare/vefozel.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/ubnt_m2_range.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/piriform_ccleaner_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/89539389868.pdfIn PDF document text
    • http://ruxurosagogaru.epizy.com/56879266185.pdfIn PDF document text
    • http://peburameg.epizy.com/how_much_do_priests_get_paid_in_australia.pdfIn PDF document text
    • http://sukowinom.rf.gd/christmas_koila_audio_songs.pdfIn PDF document text
    • http://memaded.epizy.com/nokujuwolutudemonata.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/akkurat_bold_italic_free.pdfIn PDF document text
    • http://nidomuku.rf.gd/monster_2020_full_movie.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70D 5280 bytes
SHA-256: 2f5ac20d4fe02a9c93273fea2ec25867f11efc7018b189e3810674af5e85f205
font_01_sfnt_off000108e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E4 2752 bytes
SHA-256: e12ea0762f34ac1440609297fea987dbdac76fb2c62d097750ec1b5c77a5a856
font_02_sfnt_off00011491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11491 11228 bytes
SHA-256: ed1f190ada8bb8034f75cf5a2b552467ce3307219ac57c9438ffc019459d3de3
font_03_sfnt_off00013aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA4 16392 bytes
SHA-256: 1a2cef344135cdcc96c5e1f54e34dedc508871894fe74269a84f378fcf36fd5f

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