Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa7363dd9ee4fc9…

MALICIOUS

PDF

117.7 KB Created: 2021-04-08 13:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5dda74f9b9647a1085e7e634ccf9d2fc SHA-1: c34752853f82226e14e79821acd9c1fb57f3675b SHA-256: 6aa7363dd9ee4fc948d8b74b8f4b96a61091866cb78ae239f398e473d1d0c1e3
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged by ML and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to satellite imagery search results, directing users to a suspicious domain. The presence of multiple disposable domains and link farms indicates a phishing or malware distribution campaign.

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://soxebez.ru/strik?utm_term=que+es+una+banda+en+una+imagen+satelital PDF link annotation
    • http://melowimaz.getenjoyment.net/amenaza_de_parto_prematuro_msp.pdfIn PDF document text
    • https://vabakapis.weebly.com/uploads/1/3/1/4/131453405/33a5c.pdfIn PDF document text
    • https://xegazoniwenopuk.weebly.com/uploads/1/3/6/0/136011370/f07a50194e9.pdfIn PDF document text
    • http://bofesota.66ghz.com/cambridge_guided_bus_cycle_path_map.pdfIn PDF document text
    • http://gidilakapajuke.mywebcommunity.org/historia_de_la_arquitectura_bizantina.pdfIn PDF document text
    • http://kuliwegi.sportsontheweb.net/derizodawijaxivukavi.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
    • http://sibepiz.epizy.com/60942098332.pdfIn PDF document text
    • http://vekizuzo.rf.gd/4074341632.pdfIn PDF document text
    • http://xuzazepixo.epizy.com/zifetumitujaz.pdfIn PDF document text
    • http://jomerijokera.rf.gd/fisodojikabede.pdfIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_5c028c1fc35740d6a3741f39a0e2cb23.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rowubunak/helping_verbs_worksheets.pdfIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_fe5e50b578a84b268d6c185c22d13784.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rufonali/how_do_i_know_if_my_battery_or_laptop_charger_is_bad.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/orthopaedic_physiotherapy_assessment_form.pdfIn PDF document text
    • http://wefalojinon.rf.gd/anaconda_spyder_python_2._7.pdfIn PDF document text
    • http://fezitemepu.epizy.com/easy_piano_chords_for_sad_songs.pdfIn PDF document text
    • http://gemimuraxovaxaf.rf.gd/air_layering_mango.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FA9 5020 bytes
SHA-256: 772ba7698c1c51c70399727fe3956f89b2046fbb4663a5612a34d9f64bc10246
font_01_sfnt_off0001909e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1909E 12720 bytes
SHA-256: 02578b319e4843be20594ac467807b4a24edaee04d3d294f6db0a11d8c48d104
font_02_sfnt_off0001b924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B924 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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