Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e875b63ad367705…

MALICIOUS

PDF

88.9 KB Created: 2021-03-24 10:38:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dc14afc0009aebe5204b8503ecda7f8c SHA-1: 623423442400387e4653aacf2bb2157f93d1207d SHA-256: 3e875b63ad367705d26a7a444df6a8a718c06bf3ffc122917bcce47ef3ecec70
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website disguised as a search result for a popular game. This is a common phishing lure to direct users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a further payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/wix?keyword=space+flight+simulator+unblocked PDF link annotation
    • http://marketitaly.pro/1924928302788iao.pdfIn PDF document text
    • http://korefubelexusiz.medianewsonline.com/past_tense_vs_present_tense.pdfIn PDF document text
    • http://goldenframecollision.com/16841025374zbpwt.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/renomu.pdfIn PDF document text
    • http://miwipagodu.22web.org/amelita_rae_espaol.pdfIn PDF document text
    • http://sezejawi.mypressonline.com/gilewiba.pdfIn PDF document text
    • http://nadixonoju.iblogger.org/what_does_jesus_say_about_eating_meat.pdfIn PDF document text
    • http://zonojebiridizo.mywebcommunity.org/ansys_fluent_training.pdfIn PDF document text
    • http://biomaniks.website/29193514682d9f96.pdfIn PDF document text
    • http://gubixazolela.sportsontheweb.net/toyota_corolla_hatch_2016_dimensions.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/oxalate_foods.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/berenberg_capital_markets_analyst_salary.pdfIn PDF document text
    • http://xelowonol.scienceontheweb.net/boss_gt_100_manual_espaol.pdfIn PDF document text
    • http://8bitbeardsco.com/rerenodimobujikudiporbyzk.pdfIn PDF document text
    • http://itclick.info/form_1120x_nol_carryback61msb.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://suduxegowur.onlinewebshop.net/pumites.pdfIn PDF document text
    • http://gixopiv.onlinewebshop.net/7941686858.pdfIn PDF document text
    • http://lofunadex.myartsonline.com/36991933711.pdfIn PDF document text
    • http://fukovaxirukaxa.rf.gd/66016929003.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE495 6712 bytes
SHA-256: d829e584848e68bcffeced206f84b4ea4e04778b4ae5c3945aa1aa52e9198711
font_01_sfnt_off0000f555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF555 8068 bytes
SHA-256: 27e021e28b5d17b4a224349531b9cfed6006d1886d4482f4e4f6e3f4ce42ad40
font_02_sfnt_off00010a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A29 5760 bytes
SHA-256: e6cb5d3bd0b23108b97421695bba3656ed22803ad5d4e24e5f7ea50fe4457acb
font_03_sfnt_off00011d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D8B 12700 bytes
SHA-256: af54ff618cb6922877d6cb11422600c6db27cc37e5117e3775c22ae6251c42d9
font_04_sfnt_off00014714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14714 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c