Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a08fc4e196cb26…

MALICIOUS

PDF

83.8 KB Created: 2021-05-13 04:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 06f795e820c1ef181399cb2891e9c12c SHA-1: 708a864e114909d4a93460bd73b182c052d3e9f1 SHA-256: 11a08fc4e196cb26c543ad639c3e2dac8acef09fd0a2eeae5bb1d788385ad8bd
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/strik?utm_term=how+to+do+3+day+potty+training PDF link annotation
    • https://cdn.sqhk.co/sogupavetut/cjfZghR/lidosovewirawegarufafod.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/g1IihPN/27408749454.pdfIn PDF document text
    • http://sakivometo.medianewsonline.com/einstein_biography.pdfIn PDF document text
    • http://mezeferatitora.scienceontheweb.net/janipatilonu.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/j5lhhbw/85083382499.pdfIn PDF document text
    • http://dalosizofovabes.medianewsonline.com/57250931126.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/ncert_books_class_6_social_science.pdfIn PDF document text
    • http://kavakedego.scienceontheweb.net/census_method_of_data_collection.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/dedinavesute/caller_name_speaker_announcer_apk.pdfIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_f4a57df07e904243b48ece74992fedae.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/demonology_warlock_dps_guide_bfa.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/breville_800esxl_price.pdfIn PDF document text
    • https://4c72699b-aa2e-4dc8-8bd5-1a54e8f938a6.filesusr.com/ugd/f3cb45_96d791d1b7bb429b82739ee9032ba3b5.pdf?index=trueIn PDF document text
    • https://82e7f058-9c2a-4352-8e65-a162d98cde11.filesusr.com/ugd/ba3c76_5ba293b2f12344da906caa3ae5eafe0c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/famelurekewakemu.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/android_bottomsheetbehavior_state.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/with_dantes_inferno_room_pop_town_vinyl_figure_06.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/peter_pan_1953_dublado.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/ruzifabutadutirofi.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/guviwawafu.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/22515589854.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/16712799491.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_off00010899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10899 5236 bytes
SHA-256: ac53d01c738bc1392e231eab3ff11c88147b511e54b709e921e4237c5d239467
font_01_sfnt_off00011a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A97 11052 bytes
SHA-256: e010a5d4be91b24651901616dcacd7aac4afdb0cece7b7d8aaefb042c2dc1a02

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