Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7dcf1395ced256…

MALICIOUS

PDF

66.4 KB Created: 2020-09-04 01:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87b368c424df56ca3957b2250176f851 SHA-1: 30db52230ab4c7ce99b9f1483a15fa028f271d1c SHA-256: 7a7dcf1395ced2566d2f38d3e70d8df8de7e25420e31c31f6b8520b6cf37d889
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with at least one identified as a malicious redirector. The primary malicious URL is https://ttraff.club/pify?keyword=android+emulator+slow+mac+os+x. This suggests the document's purpose is to direct users to potentially harmful external 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.club/pify?keyword=android+emulator+slow+mac+os+x
    • https://static.usrfiles.com/ugd/b8c837_9ad48b43fafa4531af53524faa141fbf.pdf
    • https://static.usrfiles.com/ugd/98e2de_1b719e82621545408821ba6873d8cc25.pdf
    • https://static.usrfiles.com/ugd/756799_2b548091b31245509134699953497e74.pdf
    • https://static.usrfiles.com/ugd/f103bb_53391d2b4fb6438ab1fe3fc0149a85cf.pdf
    • https://static.usrfiles.com/ugd/b65acf_9d4ed8d9f63543e7aaa95e1dda443ec1.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/laxinexuwebojezelo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texojorigerusoxuduk.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/87520244604.pdf
    • https://cdn.shopify.com/s/files/1/0435/2101/5967/files/87682333989.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/92801731605.pdf
    • https://cdn.shopify.com/s/files/1/0439/3988/9310/files/access_a_ride_application_nyc.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3192/files/2016_public_holidays_usa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/pivelusimimobajugaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/5743/8101/files/4906524164.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/87716509794.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/kanisekivipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/dosojafilinasilafiwo.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_off0000c85d.bin
9d8650445d3d01bb7374b9a3ed18cbb6cee097debda54bb70550b094b13cc309		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC85D 5232 bytes
font_01_sfnt_off0000da24.bin
93acbcce89242e8aee1beec333e6d419617df30af63395eee3ca9290b434ecc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA24 10120 bytes

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