Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14dcced581f4ead…

MALICIOUS

PDF

75.2 KB Created: 2021-02-23 12:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: cc3c4551bd6b70cd3f4ff0d35521f76d SHA-1: 46a4c603613a9b55aea1fa316a331b018a642f52 SHA-256: b14dcced581f4ead9e6a6c108a0ab5a5ca5b4318f993cd4c468be641db146ad2
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one specifically referencing a 'Potterton powermax he error code a01' which likely serves as a lure. The presence of external URIs and a link farm heuristic suggests the document is designed to redirect users to malicious websites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://baarspo.ru/strik?utm_term=potterton+powermax+he+error+code+a01 PDF link annotation
    • https://cdn.sqhk.co/tezofugowura/iidChj8/puminizapotoropavaki.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/aMWRqgj/wubowuluduwosilepo.pdfIn PDF document text
    • https://cdn.sqhk.co/melivetipi/iQibR8x/board_game_arena_add_friend.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/gf0gehi/87981541579.pdfIn PDF document text
    • http://stingeksoj.online/gunesafilabulikojazugimajl9vqz.pdfIn PDF document text
    • http://onlyforyou.space/pixatikalomodurusfm2f1.pdfIn PDF document text
    • http://datingdate.site/case_ih_troubleshootingtv3zm.pdfIn PDF document text
    • http://pogadai.xyz/do_you_capitalize_the_day_of_the_week_in_a_sentencend1gl.pdfIn PDF document text
    • https://cdn.sqhk.co/wisisatofife/rp7hehg/xesutikuwokomikoweni.pdfIn PDF document text
    • https://cdn.sqhk.co/mogilirexexa/8mjijhK/balenciaga_shoes_track_white.pdfIn PDF document text
    • http://pmaider.com/converter_jpg_em_smallpdf4ozu8.pdfIn PDF document text
    • https://cdn.sqhk.co/fofesali/chgigia/fojifuxamedavomune.pdfIn PDF document text
    • http://rafale.store/16815133057goxw1.pdfIn PDF document text
    • https://cdn.sqhk.co/rolidofajug/Xiii2EY/boomerang_cartoon_app_review.pdfIn PDF document text
    • https://cdn.sqhk.co/businaxidare/ihegcgh/bibekopedefilexisiruvet.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/gofilafixu/mujigemogulodamewer.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/crying_lady_cat_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/16565956962.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/free_zarchiver_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/tujuan_amandemen_uud_1945.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/assumptions_and_constraints_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/gb_whatsapp_apk_latest_version_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/test_de_apgar_pediatria.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_off0000e956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE956 5456 bytes
SHA-256: 6341b53a8846de88282895e237cfdaaebe94a6c035045cc5e0011b166592585a
font_01_sfnt_off0000fbd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD2 10296 bytes
SHA-256: 668e01188a811222efda79544f3e67c0a4b33fd0116d97bcc1cd9d6f1bd830e0

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