Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfafc24f4866aa5b…

MALICIOUS

PDF

76.9 KB Created: 2021-03-17 03:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 128745b2fced925fdeeb9db07a20df4a SHA-1: 25e4e844295a2afa65bfff499276e71c260259ef SHA-256: bfafc24f4866aa5bd80070cd2bba0e6af83092bd2a6a7e8694e54a78261628a3
134 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, with a specific detection of 'Pdf.Phishing.Trojan'. The heuristics indicate it functions as a link farm, likely to distribute phishing content or malware, and contains language suggesting an invoice lure. The embedded URL 'https://soxebez.ru/wix?keyword=po+number+vs+invoice+number' is a primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://soxebez.ru/wix?keyword=po+number+vs+invoice+number
    • https://cdn.sqhk.co/jadepibake/jhlhejf/96631265710.pdf
    • http://negozio50sconto.info/what_kind_of_management_style_do_you_like6csag.pdf
    • http://game-pro.xyz/heart_touching_love_story_video_song_downloadkzn5s.pdf
    • https://cdn.sqhk.co/kogewole/jhid6jj/hachiko_statue_in_tokyo_location.pdf
    • http://remoliwagofaju.mywebcommunity.org/free_wordpress_theme_builder_software.pdf
    • http://wewogokuwidu.mywebcommunity.org/38296842186.pdf
    • http://vabodulesofife.22web.org/what_types_of_functions_have_vertical_asymptotes.pdf
    • https://cdn.sqhk.co/dewozoju/PC8ERhj/jolenigofilojizuzajoseno.pdf
    • https://cdn.sqhk.co/pifonode/znzgfig/6940217063.pdf
    • http://wijetaz.mypressonline.com/32332381345.pdf
    • https://cdn.sqhk.co/sevimifogu/oSP8N3K/google_local_guide_level_7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a1c57371-c9e0-41af-814b-932dec7f19db/what_is_the_best_beatles_album_of_all_time.pdf
    • https://uploads.strikinglycdn.com/files/e31d657b-dae0-4919-ac5e-d238a3a93c7e/pivizuvowowumiretu.pdf
    • https://uploads.strikinglycdn.com/files/5606af6e-aeb5-4284-b6d9-b747d63a1604/31595977911.pdf
    • http://polilofu.onlinewebshop.net/norazejoxosege.pdf
    • https://uploads.strikinglycdn.com/files/23a63d98-9a2d-4e09-8307-f5bbd4d47767/how_do_i_control_the_volume_on_my_samsung_smart_tv.pdf
    • http://mufofizebad.rf.gd/6693307174.pdf
    • http://kogosez.epizy.com/naming_alkane_isomers_worksheet_answers.pdf
    • http://fuvuvadut.onlinewebshop.net/15406685276.pdf
    • http://budunasetixap.epizy.com/physical_regions_of_canada_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/85f72e4e-7af6-485a-920b-d459bbf19fa4/45674177074.pdf
    • https://uploads.strikinglycdn.com/files/dbde8f3c-b36a-41c4-8bfe-b2110ea2b7ee/magna_carta_impact_today.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4fc.bin
c98579938c81524208556e10816cb61ff0376de0efbaefb62a8a25672835a7f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FC 4708 bytes
font_01_sfnt_off0000f4dc.bin
77f1021b306c2a29b1fb039100da379c390cd609286ae6453ad1f51372fd8f41		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DC 10308 bytes
font_02_sfnt_off000117e1.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117E1 4324 bytes

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