Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adb1264be0ebd56…

MALICIOUS

PDF

46.9 KB Created: 2020-07-15 09:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7438dd994b43c9c39a9f860bb97c6cdc SHA-1: 50920fa6e8ce8b4caf50088f5541380510961a03 SHA-256: 8adb1264be0ebd56d8000b16dec1cf9a5830f0ab4aa20f24c4ec5feecc26ad98
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to a known malicious redirector at 'ttraff.ru'. Another heuristic indicates a large number of external PDF links, suggesting a link farm used for SEO poisoning or traffic redirection. The document body, though heavily obfuscated, contains text related to 'Etica para amador libro pdf', likely a lure to disguise the malicious intent of the embedded links.

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.ru/wb?keyword=etica%20para%20amador%20libro%20pdf
    • http://files.gaithersburgpickleballclub.com/uploads/1/3/1/1/131164024/385595.pdf
    • http://files.missbrittanyteaches.com/uploads/1/3/2/8/132815385/tedudozefexu.pdf
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tinoled.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/datukogefemi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61051106257.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/jipusadanobu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/zajadegifanumi.pdf
    • https://wabufalij.files.wordpress.com/2020/06/makuduxis.pdf
    • https://gagubajugi234726942.files.wordpress.com/2020/06/96215733127.pdf
    • https://vafixumev.files.wordpress.com/2020/06/remewadutus.pdf
    • https://rufutusizuk.files.wordpress.com/2020/06/47062658548.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/komilorunidanepan.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/bexukenoxafaxafekujumi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/45695514457.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/turob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/xapemixuwikeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4693/files/didorevewener.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puliwaxaj.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_off00007999.bin
f147e5c77ef6b419fd63addf5afe1e1a3051c929ad5d7f3506e49724defd1df4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7999 4784 bytes
font_01_sfnt_off000089cc.bin
a528969ef065367f53a4a9b2c7fcaed7964113649d5732af774312a5519e3361
pdf-font-stream PDF embedded font (sfnt) at offset 0x89CC 12072 bytes