Malicious PDF — malware analysis report

Static analysis result for SHA-256 19bfc7d4c2b8555a…

MALICIOUS

PDF

87.2 KB Created: 2021-03-23 13:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f901196b68665641c297a74cfca48a3e SHA-1: 980f0d72b5abecac8aa22f0077335087d23f0acd SHA-256: 19bfc7d4c2b8555ae50909297d874d8eba25f78ea2c6329b837354c478990956
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to a search query ('What is iata dgr') and references wkhtmltopdf, suggesting it may be a lure. The presence of multiple unknown URLs, including one directly referenced by a PDF_URI heuristic, points towards an attempt to redirect the user to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/strik?utm_term=what+is+iata+dgr
    • http://betizekaxu.getenjoyment.net/fogifijujotemibubutaxev.pdf
    • https://static.s123-cdn-static.com/uploads/4455176/normal_60078c026bdab.pdf
    • https://cdn-cms.f-static.net/uploads/4491669/normal_60176aa9f2380.pdf
    • http://kafujaguvo.mygamesonline.org/33745910100.pdf
    • https://static.s123-cdn-static.com/uploads/4425916/normal_5fcbf03abd79d.pdf
    • https://cdn.sqhk.co/tirabipati/theifA8/gukuvutusimobizada.pdf
    • https://cdn-cms.f-static.net/uploads/4488103/normal_603632921aab2.pdf
    • https://cdn-cms.f-static.net/uploads/4417824/normal_604cce030e719.pdf
    • https://cdn-cms.f-static.net/uploads/4474997/normal_6040ddb22bfab.pdf
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5fcfb8e50c3fc.pdf
    • https://cdn-cms.f-static.net/uploads/4477167/normal_5fd1f0c0c6216.pdf
    • https://cdn.sqhk.co/damukowabij/ghiidmx/ice_cream_cone_clipart_black_and_white.pdf
    • https://static.s123-cdn-static.com/uploads/4425255/normal_5ffd0b09aa64c.pdf
    • https://cdn.sqhk.co/kivipemo/Dvidgjl/android_nougat_32_bit.pdf
    • https://cdn-cms.f-static.net/uploads/4452594/normal_600c8e572f261.pdf
    • https://cdn-cms.f-static.net/uploads/4416806/normal_5fd1a7ac0b10c.pdf
    • http://lumobumekola.getenjoyment.net/berserk_manga_tomo_1.pdf
    • https://static.s123-cdn-static.com/uploads/4483854/normal_6006026f70144.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pizivurapab/2100522414.pdf
    • http://fajenadiwizowo.atwebpages.com/kajoxadojaj.pdf
    • https://s3.amazonaws.com/mudurixo/51603389802.pdf
    • https://s3.amazonaws.com/xilasisefi/business_informatics_jobs_in_usa.pdf
    • https://s3.amazonaws.com/pafiganovavi/84847072266.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a21.bin
ff0846e607764d7ba9a9e4607f6ef6a65d5f8390d7b19835926657f8e2b39a8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A21 5068 bytes
font_01_sfnt_off00012b64.bin
7827caab25f06d93d323a33c17a047ad590f28550162041f06022d7690bc6244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B64 10628 bytes

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