Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e2ba163a4a10c7…

MALICIOUS

PDF

76.9 KB Created: 2021-03-10 16:35:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5944abdbfd6240acfb7ef39299dc41e0 SHA-1: dc4dedd5e3c9ca015fc97509c76773cd62b4fc2f SHA-256: f2e2ba163a4a10c7ddc3af58e0735a7712361501e2ea6af230d9f0ff232b9aae
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan attempt. It contains numerous external URLs, many hosted on disposable domains, designed to redirect users to malicious content. The document body, though partially garbled, suggests a lure related to unlocking a Samsung phone, likely to trick users into clicking the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://druttle.ru/strik?utm_term=how+to+google+unlock+a+samsung+galaxy+a10e PDF link annotation
    • https://cdn.sqhk.co/vujagefamig/igifHgd/70844730827.pdfIn PDF document text
    • http://opros.xyz/wezuxerovojg0le.pdfIn PDF document text
    • https://cdn.sqhk.co/wigalefu/jhiaZFM/32725775162.pdfIn PDF document text
    • http://paypallsecurity.com/xezekapodisimonosapuwomo6yxvv.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/flgdmjg/82919313906.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/Eibjhja/53305435538.pdfIn PDF document text
    • https://cdn.sqhk.co/pobijejok/hciefAq/78705327544.pdfIn PDF document text
    • http://ru-en.xyz/archery_mod_apk_unlimited_money_and_gems4t57m.pdfIn PDF document text
    • https://cdn.sqhk.co/gasalikuviz/Yiigfic/gobojomokugasifobakixim.pdfIn PDF document text
    • http://supernefritroller.xyz/bofezorilavaluverol7mr.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/fgj5gey/mokutizuxizokezizuputuje.pdfIn PDF document text
    • https://cdn.sqhk.co/sebuwemid/hEiege7/lexilavap.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/BajaGhh/messenger_app_for_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/dqzYgiH/pikosoperarufo.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/ff2ighc/rivasoresexewu.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/CL9cGid/jabomivonojavipif.pdfIn PDF document text
    • http://monongzhlh.space/prometheus_script_exporter_exampled20fj.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/wewiro/29194598804.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/how_to_cite_in_text_quotes_chicago_style.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5409cf64-37e2-4141-8011-a1941faac046/73208061904.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/titan_440_xc_rebuild_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68997286-bda1-48a4-9b27-3251bfa2af65/8932292602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/727fa713-53d1-4275-b0f6-356eea92dbb2/swiffer_wetjet_floor_cleaner_solution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112e280f-4460-49b9-9ec1-4c7ac1719c52/que_es_el_lien_sale.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_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 5504 bytes
SHA-256: 7eb0138e07ac009f2aadafc9c9238adf061089418c66d497105473fefdbdd2d9
font_01_sfnt_off000100a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A2 11036 bytes
SHA-256: cb5d974bc6fffbf0cbd9807e50634b7e342f52c425a368408fd6a4150b3f7615

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