Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bdfcfde8944efa5…

MALICIOUS

PDF

41.2 KB Created: 2020-08-08 06:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b88608c2f62f0ab98ba024fe477d771 SHA-1: ffcb21369eda5dec52ed95576a5bf8cb41f8be2f SHA-256: 7bdfcfde8944efa5e8488f03ea634aef8243ddd6684e81f96cde5461551ad237
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to a known malicious URL. The document body, though heavily obfuscated, contains text related to 'automobile companies in chennai pdf' and the malicious URL itself. The PDF also exhibits PDF_SEO_LINK_FARM behavior, embedding numerous external links, one of which is a known malicious redirector. The primary attack vector appears to be a lure to a malicious website.

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/pify?keyword=automobile+companies+in+chennai+pdf
    • http://files.zenprovcomedy.com/uploads/1/3/1/4/131437425/kemukisasa.pdf
    • http://files.earthmetaldetecting.com/uploads/1/3/2/6/132695829/xopafarabij_bexojekaso.pdf
    • http://files.5degreespsychotherapy.com/uploads/1/3/0/7/130739004/5077372.pdf
    • http://kebapad.lifeastimothy.com/uploads/1/3/1/4/131408899/fa6777c77670.pdf
    • http://files.emmazenfoundation.org/uploads/1/3/1/4/131406885/3776848.pdf
    • https://cdn.shopify.com/s/files/1/0437/9492/3677/files/raxizof.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/69253983375.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/web_to_no_ads.pdf
    • https://cdn.shopify.com/s/files/1/0430/9853/8151/files/56515100763.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/vmware_workstation_pro_15_license.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/52578340434.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/gafamasifelepajazino.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/8006/files/67304776311.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/21897889435.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/bassariscus_sumichrasti.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/donodilokanijuvolok.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_off0000626c.bin
fec93b2203fbdd1f6171d6fbd9c1542a7e08f15c8158d98087d7f3a7ed5188de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626C 5428 bytes
font_01_sfnt_off000074b6.bin
647cdad20468f4955ff5a5a2fc72ff046a5039fd82cfe45bce8ee54712d88ddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B6 10424 bytes

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