Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78a94e9e17908d1…

MALICIOUS

PDF

52.5 KB Created: 2020-08-26 05:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d69d24da22c03025010808b8b3a7471 SHA-1: 029a0a19bf67ab23b368be234c95cecda8b8d5cb SHA-256: e78a94e9e17908d1f1744a38c3c2688113a7bc6fd7aa1d9c0276584d23fa4a21
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking PDF filename, suggesting a lure to disguise the malicious intent. The primary goal appears to be redirecting the user to malicious infrastructure.

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=fire+emblem+fates+revelation+child+guide
    • http://safawotok.homemadehatsbycheryl.com/uploads/1/3/0/9/130969336/jafekifur.pdf
    • http://files.agbole.com/uploads/1/3/1/4/131454699/giputebipavobis_kudezoxuvog_likatugu_vozapuzuvuzan.pdf
    • http://files.artwithintention.org/uploads/1/3/0/7/130776589/vilim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/bbm_full_form_in_commerce.pdf
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/rojof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/66718313300.pdf
    • https://cdn.shopify.com/s/files/1/0429/4157/9420/files/zerapekiduzex.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/sadikenirefol.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/zifadu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/luginomesofiradusunaja.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/34001603753.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3062/files/muscle_gain_workout_plan_guru_mann.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_off00008f05.bin
b0c6e3154b3a1f3af8fa5a94fc92686b7a4a31a60c1fcfbbf0a6f9d8f6151068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F05 5592 bytes
font_01_sfnt_off0000a1d6.bin
b259ea0106355a0efb917d2d54d6afee52eb07ca5f397c4eb7548128550f4bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D6 10260 bytes

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