Malicious PDF — malware analysis report

Static analysis result for SHA-256 983c107b1bcdf820…

MALICIOUS

PDF

37.6 KB Created: 2020-08-24 11:33:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28beb6368105bfcc7c3cf5c50b2d2b5b SHA-1: 3adc6f6f7e6a379ecd11fac1bf068bae5a6da671 SHA-256: 983c107b1bcdf820f1a3ab0e7d7190edb9d9f4b5c242e977d265493ac146f606
170 Risk Score

Malware Insights

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

This PDF document contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The presence of a 'download button' lure and instructions for a password-protected archive indicate a likely attempt to trick the user into downloading a malicious payload. The primary malicious URL identified is https://ttraff.ru/pify?keyword=calculator+vault+premium+apk+free.

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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
  • 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
  • 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://ttraff.ru/pify?keyword=calculator+vault+premium+apk+free
    • http://tikosu.mtmacedondawnservice.org/uploads/1/3/0/9/130969744/b6b71d.pdf
    • http://tafiw.carpetcleaningbyjeff.com/uploads/1/3/1/3/131380591/5995846.pdf
    • http://files.clontarfbuildinghistory.com/uploads/1/3/0/7/130776674/sofidok.pdf
    • http://xoxakeva.huihefurniture.com/uploads/1/3/1/3/131378776/42ead80.pdf
    • http://files.demusproductions.org/uploads/1/3/1/6/131637679/6666b6e7c9b6a6.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/32328762902.pdf
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/gizovijuwix.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/el_viaje_del_heroe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/57486344913.pdf
    • https://cdn.shopify.com/s/files/1/0464/6640/0414/files/apache_tomcat_8._0._36_error_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/datasheet_bf_422.pdf
    • https://cdn.shopify.com/s/files/1/0437/3010/8577/files/liwajadojatovoluliguri.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/where_to_stay_in_tokyo_japan_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/9450338440.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/rebojunaxojimaner.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/13824426102.pdf
    • https://cdn.shopify.com/s/files/1/0459/8136/8487/files/suffixes_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/free_closed_syllable_worksheets.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005617.bin
5faf5d627efa52b9bbd456151bd9f0e84cc421d929dfe3fe39f68d3c21834c49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5617 5012 bytes
font_01_sfnt_off0000671b.bin
0f7c9bd0076de7fe49d608add9b4fbc8fc337a0aa3b01980cc1adbe34e6131fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671B 9924 bytes

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