Malicious PDF — malware analysis report

Static analysis result for SHA-256 3566dee694411b1e…

MALICIOUS

PDF

63.9 KB Created: 2020-08-07 06:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fc2f28311f9f9eda202e17c3d93e01c SHA-1: 490fb52137edc0ca2a8b2057b1a5330695de69c6 SHA-256: 3566dee694411b1eb53f5d1350236d19dd2e0fbccd0efe6b943fb5a9aad9700f
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, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, and another flagged a 'PDF SEO Link Farm' with numerous PDF links. The document body, though heavily obfuscated, contains text related to 'understanding human behaviour psychology pdf' and includes the malicious redirector URL, suggesting a lure to a malicious site. The primary IOC is the malicious redirector URL.

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/pify?keyword=understanding+human+behaviour+psychology+pdf
    • http://files.op1620.com/uploads/1/3/0/7/130776714/8885128.pdf
    • http://files.aledobandboosters.org/uploads/1/3/2/6/132681946/8067431.pdf
    • http://files.holicarellc.com/uploads/1/3/2/7/132740743/neviwifena.pdf
    • http://kibebix.santarosapool.com/uploads/1/3/1/6/131606727/4d38da26d0685.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/milikefasozulinusogadiwak.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/97977517640.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/pulobodukadejutokumasibe.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/natenebafapurezofifam.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/zabataj.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/where_are_discord_servers_hosted.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/livogomana.pdf
    • https://cdn.shopify.com/s/files/1/0437/9344/9122/files/55683499068.pdf
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/52375599100.pdf
    • https://cdn.shopify.com/s/files/1/0447/4994/7029/files/aspiration_pneumonia_dog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/ballroom_blitz_tab.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/89373555478.pdf
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/fuferomemakidido.pdf
    • https://cdn.shopify.com/s/files/1/0436/0113/3731/files/depuriwi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad5e.bin
3a059eba51e13bae6f0c255b7d9ff3f8c30479dac38e8e9afcdb65eaba07d966
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD5E 5744 bytes
font_01_sfnt_off0000c0bc.bin
08501afbcac210cf8d63c75605952124c10da74647c1d4d470888079f687127c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BC 10516 bytes
font_02_sfnt_off0000e468.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xE468 4324 bytes