Malicious PDF — malware analysis report

Static analysis result for SHA-256 debf9f9b09fbc701…

MALICIOUS

PDF

44.3 KB Created: 2020-09-09 21:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ada863d2f078f2987b527323291b29 SHA-1: e66217d369dbca809864271afcd697c11c2f1d8a SHA-256: debf9f9b09fbc70124fe1e0aa78e18768808662cf332d0e934e2921cf4f29693
150 Risk Score

Malware Insights

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

The PDF contains a critical 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 hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=discussion+lab+report+biology+plant+tissues
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/mudoxipemonikaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5068/0991/files/fall_out_boy_ring_tone.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/7542864803.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/xidokozivikivetije.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/98495001263.pdf
    • https://cdn.shopify.com/s/files/1/0434/3611/4076/files/asana_slack_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/94303515076.pdf
    • https://static.usrfiles.com/ugd/f80014_7e0ea45527144b0d875a328bd9d591b8.pdf
    • https://static.usrfiles.com/ugd/88a84f_373710b6bf7c4bca9f19e9a555f2eef5.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c954b95b6f746faaf3d307c7670caea.pdf
    • https://static.usrfiles.com/ugd/28146e_540380861e3d4b6894cd40c2e32b5256.pdf
    • https://static.usrfiles.com/ugd/808d8c_6bc5afe0c575417ca144321efcf64504.pdf
    • https://cdn.shopify.com/s/files/1/0430/4394/6649/files/quran_with_urdu_translation_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/income_tax_act_1961_amended_upto_date.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/netflix_android_app_subtitles_not_working.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_off00006f19.bin
589e22a5bcbf881c285783bf1f4d84672bb41bfd9695b4b41b46d1c2ae11d618		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F19 5340 bytes
font_01_sfnt_off0000815d.bin
756834f3acb435fa47ac731afc331f9bd258e29e75516f151e5ff3df60e1d4be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x815D 10200 bytes

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