Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeecd32d38c28cd1…

MALICIOUS

PDF

83.6 KB Created: 2021-05-20 15:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: da8da848dcf19e6b49cc89240d5ea2d3 SHA-1: 30542074b9668101328ab5aa63f953dbcfbfd967 SHA-256: eeecd32d38c28cd11982fb2cc7d62265c31fdb6908aef56263e97f610b645586
164 Risk Score

Malware Insights

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

The PDF contains a link farm and a lure to click on a link, suggesting a phishing or scam attempt. The presence of numerous external links, including one to 'vilenefex.ru', indicates a potential attempt to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/strik?utm_term=what+is+the+best+emulator+for+pubg+mobile+on+pc PDF link annotation
    • https://sukigemanewa.weebly.com/uploads/1/3/2/6/132681928/toraragizekani.pdfIn PDF document text
    • https://suzotavuni.weebly.com/uploads/1/3/4/7/134765747/galemiwup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411250/normal_602517f7d5f36.pdfIn PDF document text
    • https://wibarojadika.weebly.com/uploads/1/3/4/6/134689619/6b82932.pdfIn PDF document text
    • https://rewazute.weebly.com/uploads/1/3/4/6/134648352/tanuxotagefapiwevuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470223/normal_606e75f9541f6.pdfIn PDF document text
    • https://sivobevabe.weebly.com/uploads/1/3/4/6/134665070/5164993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_601cdba5229af.pdfIn PDF document text
    • https://nobenore.weebly.com/uploads/1/3/2/6/132696051/sabagizasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_60269bc22b6bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414689/normal_605d4aa763812.pdfIn PDF document text
    • https://lipixebuz.weebly.com/uploads/1/3/0/7/130740586/3305169.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/sabobenuwe/34115903195.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/do_you_need_to_be_certified_to_do_eyelash_extensions_in_british_columbia.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/baby_crying_funny_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/fugapedexosopovogifexewet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09502410-9ebb-4ec8-b8c6-f34a9aafc1fc/how_to_transfer_a_call_on_a_panasonic_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/41100245061.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/sofofevuxelowexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d0d117-b900-45f6-9cca-8031ccc36c94/cuckoo_clock_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/kodofokanirabi.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/yardman_lawn_mower_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcd1be02-5660-418e-a3c2-2924407b6c37/community_ecology_food_web_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2b3006d-7382-41fe-bb63-5638f5858676/25635958754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec86fc1f-c4fc-4393-a28e-3454f50ab588/the_seven_spiritual_laws_of_yoga.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_off00010758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10758 5580 bytes
SHA-256: 20fc9dc12d196ffdcc08ff3703e12c033dd01a68f1f1b6f8200b53638692a346
font_01_sfnt_off00011a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A38 11380 bytes
SHA-256: d49784202468df563936f3a27414ed52b1ec4b294ef6eaa7699849fb2040b18f