Malicious PDF — malware analysis report

Static analysis result for SHA-256 f943a4b7e8b070e7…

MALICIOUS

PDF

79.4 KB Created: 2021-03-06 18:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d7a29cd3fd689e58b49154d3b1c5980d SHA-1: 12a05dd42230a45d2828020a18b4e6bf43925a05 SHA-256: f943a4b7e8b070e733f378fead040cbd42deff0fe8c0b10e53a9cbcef64444a1
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a link farm on disposable hosting. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://jumiwimov.ru/aws?utm_term=what+girl+name+means+gift+from+god PDF link annotation
    • http://vknacruckalaikov123.xyz/survivalcraft_2_magico_mod_apkjs1w6.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/xelofupugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_600dc31b0359d.pdfIn PDF document text
    • http://tuzotumefakorok.scienceontheweb.net/lagepogolejomo.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/593242667680ecut.pdfIn PDF document text
    • http://jevijuratovate.22web.org/11270038753.pdfIn PDF document text
    • http://foodguideblog.com/gorofobawovbqjar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_602ce23e49bf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446761/normal_60413f0108e54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459027/normal_600c98e059af6.pdfIn PDF document text
    • http://webpost.pro/xpress_redi_set_go_pansl6a8k.pdfIn PDF document text
    • http://fuwijumazawad.mywebcommunity.org/bomber_safety_glasses_near_me.pdfIn PDF document text
    • http://domastmsk.space/26765255204hhxnn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367961/normal_5fe5b4d9540ae.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
    • https://uploads.strikinglycdn.com/files/5612a31f-70c0-4366-bb81-13bd162fd1d7/60386076832.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/facts_about_angles_in_parallel_lines.pdfIn PDF document text
    • https://72cee60b-533f-4fda-9f40-87b1bb6f0553.filesusr.com/ugd/590778_ea50698642df4022aa97550366d83b28.pdf?index=trueIn PDF document text
    • http://wekumut.epizy.com/ny_state_child_support_direct_deposit_form.pdfIn PDF document text
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_03561d38b3404a84b42abab65bb862fd.pdf?index=trueIn PDF document text
    • http://parijuxurumemew.epizy.com/77020802484.pdfIn PDF document text
    • http://vilujemes.rf.gd/kuzanutejogiwizugobima.pdfIn PDF document text
    • https://9005a25f-7293-4a73-bb0f-bc58e8c16807.filesusr.com/ugd/e3834b_c118b28cab2e4bd790eea10fa0a44e23.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d359a453-15cb-45b9-80b5-a3c3f995312e/livuzetiwolovamazelifol.pdfIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_da30819f1ea049e3910409c1b93cea53.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb115d9-39f5-4c02-bdd9-9c046527f532/add_second_edition_character_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f548f006-d92b-49c4-913a-f1077203b7f4/tesla_model_3_price_cut_in_china.pdfIn PDF document text
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_50bae0ca5eb2409096577ad99dcb8d3c.pdf?index=trueIn 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_off0000eb5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5A 5120 bytes
SHA-256: 632cf0035442292efad8bb57b1df0ee0f23efd7509f73226de2370ba71139263
font_01_sfnt_off0000fc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9F 10856 bytes
SHA-256: 143ea69e3770ebf110d0d6752faf522991f0660f91794b03445b3006cb00a60f
font_02_sfnt_off0001218a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1218A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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