Malicious PDF — malware analysis report

Static analysis result for SHA-256 235ab0bc8b9a9a34…

MALICIOUS

PDF

78.5 KB Created: 2021-03-27 14:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89073d1ef1a6ec768f6052ea06d3add9 SHA-1: be8ad3f38f06df7275e133c456850a2dfb13688f SHA-256: 235ab0bc8b9a9a34529457684c7840f756def86bd23eb81c04420486422e87a1
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=disneyland+hotel+map+2019
    • https://cdn.sqhk.co/mokabawimav/iezNKhg/zuxebifixalebetavax.pdf
    • https://cdn-cms.f-static.net/uploads/4421464/normal_605eeff5551a7.pdf
    • https://static.s123-cdn-static.com/uploads/4366302/normal_5fe11adf12d0d.pdf
    • https://cdn-cms.f-static.net/uploads/4383802/normal_605dd39dceca7.pdf
    • http://nunobuzipame.medianewsonline.com/toefl_practice_test_2020.pdf
    • https://cdn.sqhk.co/mifigatira/aihawCB/degiwoxozukuvisojasivisu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bisapovepizaj/how_to_use_resistance_bands_to_tone_arms.pdf
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_4bd14f2da41e47e3b33e8f75d58139a7.pdf?index=true
    • https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_54f208fd0f2c4833bfe10633ee2ad1fc.pdf?index=true
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_f6ef9f4325c042e1bcd085d4416251db.pdf?index=true
    • http://mevalegija.rf.gd/kixobugidevenif.pdf
    • https://s3.amazonaws.com/lonozote/what_is_the_mood_of_the_house_of_usher.pdf
    • https://44f39d5c-a655-4437-91b6-62b11e148e71.filesusr.com/ugd/eb4c03_e1f62ad744d2472aa34469f06ba383aa.pdf?index=true
    • http://tuzuxutetug.atwebpages.com/19276701204.pdf
    • http://vagilamiporaw.epizy.com/43716882536.pdf
    • http://korofituzuxigu.onlinewebshop.net/3959828372.pdf
    • https://s3.amazonaws.com/wudibirewuduto/android_studio_button_onclick_example.pdf
    • https://s3.amazonaws.com/petubapizo/84295470036.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_off0000f331.bin
7cf8273ebd669a05bad6f14e55ccf0a43c69d2931960478caf84bed487c3b0f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF331 5688 bytes
font_01_sfnt_off00010670.bin
3339cbdb8c29f944cbdf75d59cf3e26a730e62faa4d2282ab701b2175293100e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 11392 bytes

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