Malicious PDF — malware analysis report

Static analysis result for SHA-256 a831d6933b4f96b5…

MALICIOUS

PDF

43.2 KB Created: 2020-08-29 22:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fed3b43363a4934a8f6296ddf787e1c SHA-1: 369b02d9a0b1b6828a1194f876d8854de2357e83 SHA-256: a831d6933b4f96b50d1e16ee44263461fca9a1435421ed70bbde784952d86084
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=net+framework.+3.+0'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into visiting a malicious site. The file also contains a PDF link farm heuristic, indicating it's part of a larger effort to distribute malicious content.

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/wix?keyword=net+framework.+3.+0
    • https://static.usrfiles.com/ugd/0baf77_54e2260a37494354bc034f150f72f15b.pdf
    • https://static.usrfiles.com/ugd/f459ea_b3e953552b7b4b6b9564410c6fcf3340.pdf
    • https://static.usrfiles.com/ugd/b8c837_f66ac0daeb2f408eb6c9e2a914be82ff.pdf
    • https://static.usrfiles.com/ugd/df4650_06add85880874f11bd6443c61bd2bad8.pdf
    • https://static.usrfiles.com/ugd/cf14a4_4a4a0b20ac7c46acb212c3ed3dd13fa8.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/jetavegabilimadorajozo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/96049274643.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/72670043523.pdf
    • https://cdn.shopify.com/s/files/1/0448/3697/8849/files/fotiwomulow.pdf
    • https://cdn.shopify.com/s/files/1/0436/7224/0293/files/builders_profile_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/wajokanodajegigafuxale.pdf
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/annotated_bibliography_rubric_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/berliner_platz_4.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/vetiwugaxitozal.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/bluetooth_hacking_apps.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_off0000694f.bin
7644767ed3cf9d7beabd687687bb37c9724d7e529815fd39797bb35a21f16c03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x694F 5164 bytes
font_01_sfnt_off00007af2.bin
68b60de89f1299200839faaced63ec8052dfac2a3126887bb981ab2c0e896362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 11656 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.