Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae14e614d4c9d2ef…

MALICIOUS

PDF

83.8 KB Created: 2021-03-09 16:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 53efec2af3152049179aca55749a8f17 SHA-1: a228364aa420654afda591a4ab4f51bff4d8f10b SHA-256: ae14e614d4c9d2efcd32899839850288db19ab765a58be3aef891db5514fb47e
186 Risk Score

Malware Insights

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

The sample is a PDF document that impersonates Walmart, a critical finding from the SE_BRAND_CREDENTIAL_PHISH heuristic. It contains numerous URLs, including one that redirects to a Weebly-hosted PDF, likely serving as a credential phishing lure. The ML classifier and ClamAV also flagged this PDF as malicious, indicating a high likelihood of phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://nevomunetis.weebly.com/uploads/1/3/0/7/130740414/7980638.pdf.
  • 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://dugedepap.ru/award?keyword=reconstruction+amendments+worksheet+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495988/normal_6004741c36f43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392667/normal_601b81b350478.pdfIn PDF document text
    • https://nevomunetis.weebly.com/uploads/1/3/0/7/130740414/7980638.pdfIn PDF document text
    • https://romuxejis.weebly.com/uploads/1/3/4/8/134887308/sedapigo_tafogezoxixuje_medasufex_vepozeli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463532/normal_5ff1ff45d6d27.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/james_fletcher_net_worthhngwo.pdfIn PDF document text
    • https://risixugetiso.weebly.com/uploads/1/3/5/3/135317557/01507effc1.pdfIn PDF document text
    • http://interbank.link/harry_potter_and_the_deathly_hallows_part_2_casts5dpr.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/95611922524p9alt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_60290af85cd1e.pdfIn PDF document text
    • http://wegansit.space/ps_form_3602-nz_january_2021d26f3.pdfIn PDF document text
    • http://electriccannoz.club/john_deere_js40_for_salecdrre.pdfIn PDF document text
    • http://fherixq.com/zitelesepejurb9zo.pdfIn PDF document text
    • http://mamajan.space/end_sheet_bookbyq27.pdfIn PDF document text
    • http://vanlit.ru/boston_celtics_2018_schedule8765d.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/d6d6a062-ed58-4787-8a8b-97ac8db749fe/civil_engineering_fe_exam_pass_rates.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/81389703237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9256795-9196-46b5-953d-b2f4cbfd6dcb/how_do_you_know_when_initial_velocity_is_zero.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/xowepa.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/complete_blood_count_normal_ranges.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/xidizokumososeridava.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/color_notes_violin_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad53787-3a86-4b3c-b91b-b04cf9b0e179/what_is_code_4_mean.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_off00010bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB2 5524 bytes
SHA-256: 2e5a57f7f640817afb1e2f6b99ae0fc1282f03c71f370b871cc3fb024089cce8
font_01_sfnt_off00011e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6A 10344 bytes
SHA-256: 2858a610e659f3af058e4ba9c55a19eed1a414f9836e5af071ffcb3487706fd6

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