Malicious PDF — malware analysis report

Static analysis result for SHA-256 3286955f7eca811d…

MALICIOUS

PDF

93.3 KB Created: 2021-03-19 13:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0408926bf85788231d8255d38314e1d0 SHA-1: a442ba1d324fc97b16494460750a8d36d90fff45 SHA-256: 3286955f7eca811deb3d3bab5e5be9ed9bb5071f92d64c1ac791da5bc974d3b9
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'soxebez.ru' and a heuristic for a visual download button suggests a phishing or social engineering lure. The document body, though partially corrupted, contains text related to 'Synonyms and antonyms vocabulary pdf', likely a pretext to trick users into interacting with the malicious link.

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
  • 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://soxebez.ru/award?keyword=synonyms+and+antonyms+vocabulary+pdf PDF link annotation
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/xizovetiguvesit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411219/normal_5fca3493937c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383308/normal_60430b7db580b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449615/normal_60534e607b46e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403119/normal_5ff4d9bb98d61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403688/normal_5fc71384d9ffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444095/normal_5fdb7fa21c1a0.pdfIn PDF document text
    • https://toginomaba.weebly.com/uploads/1/3/4/0/134042469/2a2a2957e8da0d1.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/2386817.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_5fd89141cd001.pdfIn PDF document text
    • https://roguraluvi.weebly.com/uploads/1/3/0/7/130776180/e19eaa0.pdfIn PDF document text
    • https://zuzuxaze.weebly.com/uploads/1/3/4/0/134040629/9cca97b46d6be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382790/normal_5fc8305774431.pdfIn PDF document text
    • http://givepamodugag.22web.org/arranging_words_in_alphabetical_order_worksheet.pdfIn PDF document text
    • https://fepobewute.weebly.com/uploads/1/3/5/3/135386667/d3b5d000.pdfIn PDF document text
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/bikimobedizobi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://galukovo.epizy.com/criminal_vs_civil_law_worksheet_answers.pdfIn PDF document text
    • http://jilabof.epizy.com/counter_terrorist_grand_shooter_fps_mod_apk.pdfIn PDF document text
    • http://loxosufodu.epizy.com/c._h._v_full_form.pdfIn PDF document text
    • http://wuzuvulas.epizy.com/vemoxelerojabapexuw.pdfIn PDF document text
    • http://novoboninixeme.epizy.com/definicion_de_investigacion_descriptiva_segun_sampieri.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_off0001300d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1300D 5708 bytes
SHA-256: 49a7d70359b12ce9ea64233f868a34da2fb02a11d449080c466ea66859c5358a
font_01_sfnt_off0001436b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1436B 10700 bytes
SHA-256: 0462263367ff18344fc054e42d50be5e950059acc1cd20fedf65d1a88d283db5

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