Malicious PDF — malware analysis report

Static analysis result for SHA-256 108abfdf7ba0ce32…

MALICIOUS

PDF

82.3 KB Created: 2021-03-14 17:25:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6195f894cd679413b5d3d8edc194a92f SHA-1: 4efc78c14a4661dda305c25a8ad0ea81eaad3a77 SHA-256: 108abfdf7ba0ce32888239482811513c633aae0fd9bf1ad3ea1dcac926dd9778
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, with one prominent URL pointing to a suspicious domain ('lozipotod.ru'). The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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://lozipotod.ru/123?utm_term=plague+inc+ios+apk+indir PDF link annotation
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/5633461.pdfIn PDF document text
    • http://metryck.info/67861873547pj7bm.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/dcjayib/wallpaper_hd_4k_background_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/V6licbq/find_the_differences_the_detective_free_download.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/7111459278l14qw.pdfIn PDF document text
    • http://kataval.22web.org/bukekomusefadetut.pdfIn PDF document text
    • https://xowuxuwakewobi.weebly.com/uploads/1/3/4/8/134853014/benuf.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/A3gha9c/stack_the_states_online_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/dgc2jeI/80s_music_hits_playlist_youtube.pdfIn PDF document text
    • https://jotozured.weebly.com/uploads/1/3/4/5/134588142/6155084.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/vojapu/bleeding_steel_2018_movie.pdfIn PDF document text
    • http://poxizaxo.epizy.com/cortisone_injections_spine_procedure.pdfIn PDF document text
    • http://rusegidi.rf.gd/65789167326.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/mississippi_drivers_permit_book_2018.pdfIn PDF document text
    • http://pexevogawi.epizy.com/map_of_europe_before_ww1_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/craftsman_lt2000_20_hp_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/rangrasiya_serial_song_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/faditodozexemibo.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/mizuguvaminepisiratilo.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/php_date_format_month_name_day_year.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/54573988052.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/the_subtle_knife_hbo_release_date.pdfIn PDF document text
    • http://lawigut.rf.gd/savifuwarijaw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB18 5304 bytes
SHA-256: 7405ef588efa29d9dcbd311368522e924d298ecc4914f0a28dcb399aa60fe9ea
font_01_sfnt_off0000fd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3A 13172 bytes
SHA-256: d18ada5dddbfd2b93b5fde3f8d07b1b7d9e0aaefa189180b8c25dea657431e45
font_02_sfnt_off0001265c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265C 16144 bytes
SHA-256: a2dff6150b70c586cea37f949c45f341c4ee738d37dff0f9a8bcafcc15f32f27

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