Malicious PDF — malware analysis report

Static analysis result for SHA-256 faaca2fc7e3cfc2b…

MALICIOUS

PDF

86.0 KB Created: 2021-03-21 02:34:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2de89dd8c7834ec55834b83b47609528 SHA-1: ef3ae2ae28e1bdce8a93a590d81f50ffcff14190 SHA-256: faaca2fc7e3cfc2be1071b7eae887fd71e56ef817b64ea927c28de0eafe412a6
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged by multiple heuristics as malicious, including a phishing and ML classifier. The document body, though partially corrupted, suggests a lure related to driver's license renewal fees, directing users to a suspicious domain. The presence of numerous external URIs and link farm indicators further supports a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/aws?utm_term=ms+driver%2527s+license+renewal+fee PDF link annotation
    • http://daxamel.mywebcommunity.org/85985939885.pdfIn PDF document text
    • http://creditinquiry.info/images_animated_cartoon_characters_freefo60i.pdfIn PDF document text
    • http://lorezagosuvese.scienceontheweb.net/analytical_method_validation_ich_guidelines.pdfIn PDF document text
    • http://help-violation.com/attestation_simplifie_particulier_employeurfbpc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406473/normal_603787cb6e322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453907/normal_60555459de76b.pdfIn PDF document text
    • http://xititarosoki.iblogger.org/madinah_arabic_reader_book_2_download.pdfIn PDF document text
    • http://biniwitovo.mywebcommunity.org/5431515650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413982/normal_5fce68d39dbc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493541/normal_602fdc681543c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402519/normal_5fc9553019d11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464301/normal_602effa42dee8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_602ea308c8277.pdfIn PDF document text
    • http://zahlungsservice-ch.site/kitefabiparyqpg5.pdfIn PDF document text
    • http://onlinetyz.xyz/what_are_your_positive_and_negative_personality_traits1v39s.pdfIn PDF document text
    • http://freshka.fun/triphasic_bbt_chartnxsre.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/berliner_platz_2_lehrbuch.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/6736451649.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lowadof.epizy.com/indesign_templates_poster_free.pdfIn PDF document text
    • http://ralirajuz.atwebpages.com/free_bitcoin_money_adder_activation_code.pdfIn PDF document text
    • http://miwuzira.epizy.com/genetics_and_heredity_worksheet.pdfIn PDF document text
    • http://legofovivaxom.epizy.com/marantec_m4500e_remote_not_working.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_off00010d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D37 5208 bytes
SHA-256: 3e298b931d0b3cd5b5308cbe7ffc3292ca9ec0b6507ff5eda5981c1142a2ba1e
font_01_sfnt_off00011f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F24 12324 bytes
SHA-256: 9895f83a7a05e60e7d4351e6933b5aa10b5041f9202e8d38bb895aeb1d819ddd

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