Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e29595bca2d9b8a…

MALICIOUS

PDF

79.9 KB Created: 2021-02-24 18:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6c9cebd33a91f3d1475602ad6bc65e44 SHA-1: 8808acd71950476f2936be0ef0cfdf4c38ae48d2 SHA-256: 1e29595bca2d9b8a2d70bafbe97f115a9210564e97841c42f44bbb6b4e39e927
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The document body, though heavily obfuscated, suggests a lure related to 'Philips universal remote tv codes list'. No scripts were extracted, but the PDF structure itself facilitates redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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 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.
  • 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://yafferge.ru/strik?utm_term=philips+universal+remote+tv+codes+list In PDF document text
    • http://vodoroding.info/41052027221nvw71.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/renewable_and_efficient_electric_power_systems_solutions_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5fe62e0d7f752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_60237063b7293.pdfIn PDF document text
    • http://nanolenka.xyz/xevajofelobuwom3j60z.pdfIn PDF document text
    • http://poroda.site/73079874603b3jkg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5fd76f76ec2eb.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/mit_computer_science_reading_list.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/tapanixinesigipirarizag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388617/normal_5ffa27bba1f75.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/hp_photosmart_d110_printer_wont_print.pdfIn PDF document text
    • http://dixajadabaw.66ghz.com/bararotisepamoduvopari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5fda08463e603.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/63284623600.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/quantum_field_theory_demystified_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496810/normal_601880466f84f.pdfIn PDF document text
    • http://lafovawolifi.22web.org/wefuwedofezokikoxenem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5ff004ee47e09.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
    • http://tiwatimab.atwebpages.com/bell_jar_book_quotes.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/aircare_humidifier_error_code_ec.pdfIn PDF document text
    • http://konajif.epizy.com/75429278972.pdfIn PDF document text
    • http://xuzinom.epizy.com/betweenness_centrality_algorithm_performance.pdfIn PDF document text
    • http://xagewozutuke.epizy.com/data_analytics_beginners_guide.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_off0000f00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00A 5256 bytes
SHA-256: e1e1d1b1e0343c10fbf3dfcf354599e6aedf765f505f54c19c370352371ac704
font_01_sfnt_off000101af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AF 9996 bytes
SHA-256: 9f2f94da527232ef5a0e8817b752afb64ffe092ed36417217a35cd10e9adb75f
font_02_sfnt_off000123e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E2 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71