Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac7b862a5b18747…

MALICIOUS

PDF

44.7 KB Created: 2020-08-08 10:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa43eecac02790fc2ac01aa3e7b5b78d SHA-1: a0105baf43c10731bebd5701fdcdf470373be04e SHA-256: 2ac7b862a5b18747c973c41fdc47ef3a13c673c332d64fafd3644b4efe173236
160 Risk Score

Malware Insights

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

The PDF contains a lure related to cracking Aadhaar card passwords, directing users to a malicious redirector. It also exhibits characteristics of a link farm, embedding numerous external links, many of which point to benign Shopify URLs but are likely used to inflate search engine rankings. The presence of a password protection lure suggests the document itself may be a decoy to encourage the download of a separate, password-protected malicious payload.

Heuristics 4

  • 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
  • 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.cc/pify?keyword=aadhaar+card+pdf+password+cracker+online
    • http://files.csuwritingproject.net/uploads/1/3/0/7/130739704/ad4b0c9cd8cea39.pdf
    • http://files.windycityknittingguild.com/uploads/1/3/1/3/131381363/jubokodu-xuwekuketapemul-fikevapuxarev.pdf
    • http://files.rivermenrodandgunclub.com/uploads/1/3/2/3/132302973/nomegariwutok-wibiwu-visinatixubuj-sojimuta.pdf
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/camera_calibration_chessboard.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/47383170436.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/rst_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/bsc_magazine_october_2020_download_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/jipuzezote.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6614/files/free_style_trucking_inc_blue_island_il.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/tapedejanijadijupun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7837/files/present_perfect_simple_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/83798748377.pdf
    • https://cdn.shopify.com/s/files/1/0450/5042/9598/files/circular_buffer_java.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ef.bin
58793aae0590f374e72db96c95626a7cd9d1fe223feb4f391bdf966fae00d8d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 5388 bytes
font_01_sfnt_off00007948.bin
414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23
pdf-font-stream PDF embedded font (sfnt) at offset 0x7948 1940 bytes
font_02_sfnt_off0000827e.bin
cc7c57ea7721a28a3a73888ea4a4153447c9bd41a9fb26e4e6798293b8df2794
pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 10228 bytes