Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf948f3c19c43dc…

MALICIOUS

PDF

64.6 KB Created: 2021-02-28 10:25:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 14ea73cadde08ba03e674db4e7fb1cb5 SHA-1: 88a6446443dc1782aed3deb9b3f69f128f2b8fd2 SHA-256: caf948f3c19c43dc470c74e33c84b0383309b142fc0e0abdd8e5234aac6ef352
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=pltw+3.1+b+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495531/normal_5ffe501e04181.pdfIn PDF document text
    • http://sufawevugut.mywebcommunity.org/kitchenaid_superba_oven_glass_cleaning.pdfIn PDF document text
    • http://ital-girl.space/nogivuzutokofarebebaku6h2s.pdfIn PDF document text
    • http://donbetosstreettacos.com/nugukijugosuzamoydupb.pdfIn PDF document text
    • https://fojozotewimoko.weebly.com/uploads/1/3/5/3/135324817/2928999.pdfIn PDF document text
    • https://mokoloxove.weebly.com/uploads/1/3/5/2/135299893/daxoruxuti.pdfIn PDF document text
    • https://zapamapat.weebly.com/uploads/1/3/0/7/130775391/86628d8103e6.pdfIn PDF document text
    • https://tulalesin.weebly.com/uploads/1/3/4/8/134876190/9014af.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/smashing_rush_mod_apk_1._6._8c5x2v.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/ginofazejaxexapobezenad.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/65190392635pq1zu.pdfIn PDF document text
    • https://fawewetipe.weebly.com/uploads/1/3/1/3/131379545/nokuja-boxizeduweba-minebituxuloxes-nazite.pdfIn PDF document text
    • http://nojobebikokij.22web.org/76106856145.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dibulazovila.rf.gd/pirusulazi.pdfIn PDF document text
    • http://kekunulu.epizy.com/aruba_iap_225_firmware.pdfIn PDF document text
    • http://kitalanexu.epizy.com/what_is_socratic_questioning_in_scrum.pdfIn PDF document text
    • http://mevexunimapo.epizy.com/portillos_chopped_salad_nutrition_information.pdfIn PDF document text
    • http://laletanegimiw.epizy.com/usb_bootable_software_for_xp_free.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/in_what_order_should_you_read_narnia.pdfIn PDF document text
    • http://kunibenurupamiv.rf.gd/battlefield_hardline_ps4_trophy_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c04f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC04F 5160 bytes
SHA-256: d3cae8ae13579a9583b4c75a7e883f095b6bb112c11fa8e6509c68c0eaa4b895
font_01_sfnt_off0000d208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD208 9932 bytes
SHA-256: fd523dee76d7bc68c1f8bb3d59c7c61525d032acae4ca75b317633ba1f82f132