Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7b32d0e7992bbc…

MALICIOUS

PDF

41.8 KB Created: 2020-08-03 12:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4472fc11e7a9ba6e745f106c3685a10b SHA-1: 096f8152f3ed6e4dd9b1c287b358e0ed6d3228bf SHA-256: 7f7b32d0e7992bbc32b97be74f1f7e9191f10db08495ddf4c9f1031a85cb3b9b
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure victims into downloading further malicious content. The document body, though partially corrupted, contains keywords related to job notifications, suggesting a social engineering pretext. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content.

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=ap+grama+sachivalayam+notification+2020+pdf+freejobalert
    • http://files.xaletpigall.com/uploads/1/3/0/7/130738739/de06ac46ab180.pdf
    • http://files.designsbysarahmeyer.com/uploads/1/3/1/4/131437139/d49d002b3c4b.pdf
    • http://files.angelbluemarketing.com/uploads/1/3/1/4/131408970/59028f8fd16c.pdf
    • http://files.killacountryoutfitters.com.au/uploads/1/3/0/8/130873851/bilegaguteb-zeturexijux.pdf
    • https://cdn.shopify.com/s/files/1/0431/5938/8320/files/26694904065.pdf
    • https://cdn.shopify.com/s/files/1/0437/1621/4939/files/gafoxagutanimisu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/megoxaramivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/86739774268.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/jawupudaxunog.pdf
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/kegobopipilabup.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/mysqldb_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/22771068585.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/82194609147.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/38663532089.pdf
    • http://www.freejobalert.com
    • 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_off000060b1.bin
13c13fdb746ed05ed636c32ae688ba7c5d0536cdfd6c1d6027b8303a87503f0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B1 6208 bytes
font_01_sfnt_off000075c0.bin
1760d9f11fc1a58f362ed4b29d1f5d4deb25f848551d29ea27535d9d9c02254b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C0 10656 bytes

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