Malicious PDF — malware analysis report

Static analysis result for SHA-256 3deb3dd6b5894190…

MALICIOUS

PDF

60.2 KB Created: 2020-08-26 23:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4c027dd3526dc8a32c08c49bbde1b7c SHA-1: f9b1697d816ae63664cbb32697a96571db8e6117 SHA-256: 3deb3dd6b58941903225ae9ec25e4a9c1ae5739b1366ed37b3c921b74cd16183
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=download+osho+dynamic+meditation+mus'. This indicates the document is designed to trick users into visiting a malicious URL, likely for further exploitation or malware delivery. The presence of a 'download button' lure reinforces this malicious intent. While the document body is heavily obfuscated, the primary malicious activity is driven by the embedded malicious URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=download+osho+dynamic+meditation+mus
    • http://sofadez.crescentheadtavern.com/uploads/1/3/1/3/131384166/e5362137.pdf
    • http://files.holidayapartments-berlin.com/uploads/1/3/0/7/130776661/xurotiwizavi.pdf
    • http://files.adchibama.org/uploads/1/3/2/6/132681513/6408801.pdf
    • http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.pdf
    • http://files.bournemouthjrc.co.uk/uploads/1/3/2/7/132710690/9372aa38a85.pdf
    • https://cdn.shopify.com/s/files/1/0433/3463/1579/files/89868963737.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/715._determine_the_internal_normal.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0352/files/49576806521.pdf
    • https://cdn.shopify.com/s/files/1/0431/6872/7194/files/vufezelu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/popire.pdf
    • https://cdn.shopify.com/s/files/1/0434/6609/6802/files/android_room_db_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/5397/3657/files/baloncesto_en_silla_de_ruedas.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9912/files/57135982020.pdf
    • https://cdn.shopify.com/s/files/1/0436/8610/1145/files/11036428700.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4716/files/46389791752.pdf
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/jam_mathematics_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/confirm_receipt_of_email.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/nopiravapezor.pdf
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/nanije.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/feelings_and_emotions_vocabulary_exercises.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_off0000ae43.bin
ca77342e3d208eced37fce32a11f289c6980c3b581117cb8163692aedbfc0bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE43 5276 bytes
font_01_sfnt_off0000c01d.bin
4c441c6137371a4b5c4e0e0535f917e711d46776cbd0ccb46809d6115fa94939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC01D 10204 bytes

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