Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c3d62106c87b16…

MALICIOUS

PDF

44.7 KB Created: 2020-08-16 12:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d2a83f990b54a37eac7c5dcc8e727c8 SHA-1: b205f18ad7b8d4832da32a143c1a088dc330617e SHA-256: 50c3d62106c87b16b5df7d08a153e4cc807f612da7d4d5c35fc81b915bc8aa7d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass of external links, masquerading as a vehicle owner's manual to entice clicks. One of these links, 'https://ttraff.com/wb?keyword=jeep%20grand%20cherokee%201997%20owners%20manual', points to a known malicious redirector. The document body is heavily obfuscated but contains this URL and other links hosted on Shopify and various other domains, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document and malicious links.

Heuristics 3

  • 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.
  • 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.com/wb?keyword=jeep%20grand%20cherokee%201997%20owners%20manual
    • http://netuxo.sweetdreamsbirthservices.com/uploads/1/3/1/8/131858156/tumibapizezegegeno.pdf
    • http://perogug.gabgains.com/uploads/1/3/0/8/130874063/bukazivo_dowurimikemeja_wekojajuvi_fejidibemoj.pdf
    • http://files.healthyconceptsmb.org/uploads/1/3/1/6/131606668/1171341.pdf
    • http://reterejo.dcmscardinals.net/uploads/1/3/0/9/130969858/libaxosiwat_sosowika.pdf
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/nixoza.pdf
    • https://cdn.shopify.com/s/files/1/0437/4088/9240/files/doxot.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/tividabiba.pdf
    • https://cdn.shopify.com/s/files/1/0447/5705/7687/files/tenegolijeliwawox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/embryology_questions_medical_school.pdf
    • https://cdn.shopify.com/s/files/1/0433/1615/0427/files/97408248580.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4654/files/xunoguf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/facebook_android_icon_notification.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/learning_management_system_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/12013030286.pdf
    • https://cdn.shopify.com/s/files/1/0433/5134/3269/files/jixiridarutowin.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/jinis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/aceite_de_ricino_usos.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_off00006e3a.bin
c42af88ab42bbae0375398fdb90a78509811ac2fdd4b83de0e6415ef494f48ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3A 5920 bytes
font_01_sfnt_off00008254.bin
1b7b206f1d4627a147311938f16be066e2705ed030b1d3d7fc5022fd8ce609ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x8254 10388 bytes