Malicious PDF — malware analysis report

Static analysis result for SHA-256 b13d56a46c28700f…

MALICIOUS

PDF

70.5 KB Created: 2021-01-29 09:07:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7e17d51178b22d684284561ffbe6a6fb SHA-1: a5742be9569ec6161ed56a7ef8daa208f679a710 SHA-256: b13d56a46c28700f4de0f7ab359446399f306089fe3455915dd445227ccc9736
184 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'ticket to ride europe review', likely to entice users to click the malicious links. No scripts were extracted, but the presence of malicious links is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/wb?keyword=ticket%20to%20ride%20europe%20review In PDF document text
    • https://static.s123-cdn-static.com/uploads/4481164/normal_5fc67d3992c04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fd6007e666fe.pdfIn PDF document text
    • https://munerojepoges.weebly.com/uploads/1/3/4/0/134042508/1336196.pdfIn PDF document text
    • https://balikawe.weebly.com/uploads/1/3/4/6/134659528/wugugo.pdfIn PDF document text
    • http://maska-respirator.shop/topopud28e0.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/75459929555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408478/normal_5fe7a62ae5aa1.pdfIn PDF document text
    • http://dress-russia.ru/94548493588uoto7.pdfIn PDF document text
    • https://zupabigawobal.weebly.com/uploads/1/3/4/3/134326688/badodizakarokevaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480585/normal_5ff44e1f557bb.pdfIn PDF document text
    • https://vexokefiveve.weebly.com/uploads/1/3/4/4/134494279/2338730.pdfIn PDF document text
    • https://torevoxun.weebly.com/uploads/1/3/2/7/132712334/8802559.pdfIn PDF document text
    • https://lovefuzabuzonif.weebly.com/uploads/1/3/4/1/134109130/b4837.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467306/normal_600f60e942fbe.pdfIn PDF document text
    • http://cashfree.store/small_vanilla_cake_recipe_without_buttermilkmo00b.pdfIn PDF document text
    • https://tirusagoxavux.weebly.com/uploads/1/3/5/3/135329940/6560944.pdfIn PDF document text
    • http://torchqbfl.fun/libros_de_abraham_valdelomarturnm.pdfIn PDF document text
    • http://de-bewertung-889562.icu/bidovinoroxapezifowakog4qmx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wusekugu.rf.gd/31382649987.pdfIn PDF document text
    • http://judowasejalux.rf.gd/5472242656.pdfIn PDF document text
    • http://fukorow.epizy.com/48932278493.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_off0000da89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA89 4812 bytes
SHA-256: 699c3fb8954482e20854dec2a762e30802f4c99a9f71a761006a0b04079689a2
font_01_sfnt_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 9944 bytes
SHA-256: 11686cb403f7d33cd59eb235ee8c535bd7b066560cde0a1d319333c310c84cfd

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