Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2dae0a5f1a19de…

MALICIOUS

PDF

96.6 KB Created: 2021-01-29 15:10:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 516b96afedcfe89ee9071b002bbfcf36 SHA-1: 09fa8ba8766657d991b381bb290647d3058df2c3 SHA-256: de2dae0a5f1a19de49a68e2ea8a6d6eeb2aabe355825ec335ac922339d505880
186 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content is designed to trick users into changing payment instructions, a common tactic in business email compromise. The 'SE_CALLBACK_LURE' heuristic further suggests a pretext for social engineering, possibly a fake technical support or refund scam. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/wb?keyword=street%20hockey%20goalie%20pads%20youth PDF link annotation
    • https://cdn.sqhk.co/netesatova/Pikujhf/takoxolijevizonoxujifabo.pdfIn PDF document text
    • http://ita-yog.space/cod_mobile_lucky_draw_cost_singapores1gqp.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/gdggKed/pakigo.pdfIn PDF document text
    • http://stroymarketmetal.ru/4808358015h00pi.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/jhijhgL/zeriju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473902/normal_5ff15a38635a3.pdfIn PDF document text
    • https://cdn.sqhk.co/kadunila/ijh1Phc/volume_booster_goodev_not_working.pdfIn PDF document text
    • http://nosinoski.shop/pokemon_diamond_and_pearl_game_free_download_for_gbaik0kn.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/XqwasJw/wapononusesibononef.pdfIn PDF document text
    • http://fenellalucynelle.info/41810550916l7yft.pdfIn PDF document text
    • http://mantenancie.com/pdf_story_books_free_download_bengali47yqz.pdfIn PDF document text
    • https://cdn.sqhk.co/rowavarop/bydlids/41229769198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379038/normal_5fff63076f5d7.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/hTkI0jc/rotator_cuff_tear_surgery_healing_time.pdfIn PDF document text
    • http://temilops.xyz/10th_maharashtra_board_science_booki6dcc.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/eFdjhqu/numero_banco_bradesco_pra_transferencia.pdfIn PDF document text
    • http://wiinorama.website/30619303404kthpr.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/hhhcnid/sonny_s_bbq_menu_calories.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/zufojadibi/dragon_ball_fighterz_android_21_good_skin.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/80498519720.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/n_letter_whatsapp_status_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/bollywood_movies_new_latest.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_off00012ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACE 5380 bytes
SHA-256: efde7b84012bf8ba8c7f2d6f4352a7b211acec15373a0c0af3cfba4e09027e5a
font_01_sfnt_off00013d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D2F 12972 bytes
SHA-256: e14b372cf45b4af67d9612c7bd7f2c20fe12da741ced0cd3d38eaf7710a63639
font_02_sfnt_off0001665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1665A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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