Malicious PDF — malware analysis report

Static analysis result for SHA-256 754ff2f1ad359a8f…

MALICIOUS

PDF

101.7 KB Created: 2021-03-03 21:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f1ba35ec71f32bc5dd2fb49bd82870c9 SHA-1: 08ae1c5c2f3515cfaae5271d2ff5d0fad23d7f45 SHA-256: 754ff2f1ad359a8f529d8f538e852525915505204d1002a54e4897abc378a8d7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily corrupted, contains references to 'wkhtmltopdf' and a keyword search term, suggesting a lure for potentially malicious content or phishing.

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
  • 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://botokaw.ru/wix?keyword=marvel+strike+force+hacked+apk+ios PDF link annotation
    • https://cdn.sqhk.co/xuvetuzaxi/UCjgCDS/free_printable_full_page_horse_coloring_pages.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486965/normal_6019e1c6418a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404953/normal_5fdacc544fdb3.pdfIn PDF document text
    • https://cdn.sqhk.co/jotoselu/cIs6hbJ/newuwunonafif.pdfIn PDF document text
    • http://idealica-italiauficiale.website/37112041311pwt7u.pdfIn PDF document text
    • http://fajamad.mypressonline.com/fanafenimewaruzokilipoz.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/qopwihy/7_wonder_duel_extension_agora.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/fjjYldZ/68523680040.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/kmboDjd/fedarumixatavelovap.pdfIn PDF document text
    • http://businessmentality.com/carrie_a_estranha_filme_completo_dubladowp32l.pdfIn PDF document text
    • http://pubguckazan.com/nibopavunatozexomixwqckz.pdfIn PDF document text
    • http://modezewop.mygamesonline.org/nibuje.pdfIn PDF document text
    • http://vimobewawulipiz.mypressonline.com/diversity_statement_faculty_position_sample.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/nekorepenibapojukovun.pdfIn PDF document text
    • http://renedutej.rf.gd/google_maps_api_route_example_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/beko_glacier_fridge_freezer_user_manual.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/nutevaviz.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/fudelogulifiwenufuxejosi.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/sajepizilopawigevonafikif.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_off00015285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15285 5372 bytes
SHA-256: 5c8934561e4523f034c95bf8751b62e90bd91ad8977696cba3ca6b4ded15a280
font_01_sfnt_off000164da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164DA 10684 bytes
SHA-256: 0d14b9c65cfd6ddae53d8900e0d4197e3092a7636a2967951f68b39349abf788

Open this report in the interactive analyzer, or submit your own file for analysis.