Malicious PDF — malware analysis report

Static analysis result for SHA-256 7622aee5851067a4…

MALICIOUS

PDF

84.4 KB Created: 2021-03-15 19:24:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d14d7105b08261ce41987d80f90e7c9 SHA-1: b7ec7023268e5cfecf35ec9f3e1cf52d11002904 SHA-256: 7622aee5851067a4e37320e03f880c22c2931f05a510ec044656d68273555936
196 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'PDF_SEO_LINK_FARM' and 'CLAMAV_DETECTION' heuristics. The document contains numerous external links, with a primary suspicious URL being https://mezovuduw.ru/award?keyword=agenda+semanal+2020+para+imprimir+gratis+pdf. The presence of a 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the document may be intended to trick users into downloading and opening a password-protected archive, which could contain a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://mezovuduw.ru/award?keyword=agenda+semanal+2020+para+imprimir+gratis+pdf
    • https://static.s123-cdn-static.com/uploads/4366010/normal_6003b2d289811.pdf
    • https://feminudusur.weebly.com/uploads/1/3/1/4/131407357/1911343.pdf
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fd7beb62d821.pdf
    • https://cdn-cms.f-static.net/uploads/4406516/normal_6025362be45c9.pdf
    • http://jogemijafiw.22web.org/78383583684.pdf
    • https://pipefedib.weebly.com/uploads/1/3/1/3/131383483/2021987.pdf
    • https://cdn-cms.f-static.net/uploads/4502246/normal_6024205ba8bea.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://9a4b5e96-23fe-4021-9525-787506808755.filesusr.com/ugd/b3318b_c22cac784858448abe72f269ba0fd54b.pdf?index=true
    • https://e824aeac-d22a-4b45-bb3c-17051d6ee04f.filesusr.com/ugd/de60da_59863bcacbc54d98ae4a12b044dc15f0.pdf?index=true
    • https://84d655c4-d84a-4a0c-9c32-0387925bd622.filesusr.com/ugd/6233da_f6ba54001cc14895b0bc0abfa88881fc.pdf?index=true
    • http://luzeparuzibez.rf.gd/depreciation_schedule_sample_report.pdf
    • http://rimefuvax.epizy.com/tetuluvudoku.pdf
    • https://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_48f9396e212f43f882719d6344fbe6d2.pdf?index=true
    • http://begosene.epizy.com/chapter_10_maths_class_10.pdf
    • http://pujusojup.epizy.com/histopathological_report_showed.pdf
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_795cb16fe43349d2ababa6f1dec53033.pdf?index=true
    • http://wokeron.epizy.com/73279390597.pdf
    • http://gobofitis.epizy.com/internet_manager_serial_number.pdf
    • http://likalesiwala.epizy.com/ilive_sound_bar_user_manual.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd09.bin
b3f27bc9a3cac54f51319471f94893a7e4a9a2ce78294145aa16b41246f72448		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD09 5304 bytes
font_01_sfnt_off0000eee7.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 1800 bytes
font_02_sfnt_off0000f775.bin
f60b210de7a2be0140929daf696455cfb5fb32619e6a9a8b59d79a1ce8f8ee50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF775 11704 bytes
font_03_sfnt_off00011dc2.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC2 16312 bytes
font_04_sfnt_off0001334e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1334E 4324 bytes

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