Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a014b89470120b…

MALICIOUS

PDF

70.6 KB Created: 2021-03-04 20:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6b5d562155650c889b6e43b0ea9dfe04 SHA-1: d68d6866c7e3f865fb35f8844e4753cd658c40a7 SHA-256: 47a014b89470120bbc50f729fe6e148992d137e9b1c6c61910c67c9c23ec0ae0
264 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://crophysi.ru/award?keyword=descargar+biblia+de+jerusal%25C3%25A9n+gratis+para+android In PDF document text
    • http://alkostore.xyz/5457742924293ta5.pdfIn PDF document text
    • http://trysoda.pro/cost_accountant_job_interview_questions_and_answerssxng4.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/ibii0F2/best_hidden_voice_recorder_app_for_iphone.pdfIn PDF document text
    • https://bilugejedegigel.weebly.com/uploads/1/3/4/0/134017605/da962.pdfIn PDF document text
    • https://ruxabetuju.weebly.com/uploads/1/3/2/7/132740595/6818853.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/zombie_forest_hd_survivaloyyy3.pdfIn PDF document text
    • https://zafasasuk.weebly.com/uploads/1/3/4/7/134713251/5756623.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/gihfDgd/download_game_naval_storm_td_mod_apk.pdfIn PDF document text
    • https://nulumekut.weebly.com/uploads/1/3/4/3/134373747/a3162e17a9554.pdfIn PDF document text
    • https://cdn.sqhk.co/pawanipol/if2hNha/23480439424.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/ibgcQME/tumblr_search_history.pdfIn PDF document text
    • https://cdn.sqhk.co/firokizita/jggjfay/69544073081.pdfIn PDF document text
    • https://kafomepavazepa.weebly.com/uploads/1/3/1/4/131409794/5e906c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ccf1eb-b971-4262-9d35-3caaf1ed240b/what_is_the_main_idea_of_fight_club.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_6e7cf425629a4577ba3fc2fbe4e86f89.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5afbd8-7c95-48f4-a8d9-a943e5bc5ce3/zaxafidizirexapezamepesu.pdfIn PDF document text
    • https://46fb9a51-9e16-4ad8-811e-2f7ed01702f7.filesusr.com/ugd/53363c_4aaa56f641404cf7bf1d99ec9e022422.pdf?index=trueIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_d7013c1bee7b42f08de819816b88a548.pdf?index=trueIn PDF document text
    • https://caf0f927-206f-4b4e-aa34-0dd3da53679b.filesusr.com/ugd/83d902_c98bace1288c4e1da30f28225cd70dc9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/134aa36b-6e0c-4f2b-8b22-3f721613eaa8/how_to_pass_the_sc_dmv_permit_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8f11da7-a5ed-410a-86ac-3839b67c8ef5/laroduku.pdfIn PDF document text
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_504c0c1d429848abbfaabf8c97746acf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24a7d61-9ce8-479a-b0dc-64ee3b0b3109/how_to_tie_a_sliding_knot_for_jewelry.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_off0000d256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD256 5596 bytes
SHA-256: 23d992b2b859fe409e13d1b0ccb894abb0caf831359f72edfb2c14b6c487770a
font_01_sfnt_off0000e52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52E 11316 bytes
SHA-256: 35826b2920f668f0dddc546fce84596a1a2d8a7124318efb387ec1295d0db269