Malicious PDF — malware analysis report

Static analysis result for SHA-256 3774a90df78edd18…

MALICIOUS

PDF

46.6 KB Created: 2020-09-01 06:04:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abe01a488da23282ef3ca244d5a3d9f SHA-1: a8838c745aa7d814b701a19c493392514af2d73d SHA-256: 3774a90df78edd187703890d1a5bb0ad8bd865fbb0280be4a6f95982a394cc45
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure for movie downloads. The document body, though heavily obfuscated, contains the same URL and references to movie download sites. The presence of a large number of embedded links, many pointing to static.usrfiles.com, suggests a link farm intended to obscure the malicious redirector.

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.cc/wix?keyword=panchatantra+kannada+full+movie++movierulz
    • https://static.usrfiles.com/ugd/b8c837_e1b3d97bc48f497abe3862f8b9e863d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_04ba36cb25b14989b3ddd3fe3d2cb6fb.pdf
    • https://static.usrfiles.com/ugd/76156b_a99ce9ba82c94080a66300082e3d9ebd.pdf
    • https://static.usrfiles.com/ugd/32acb1_2b538f798f26435fbe3a8c6a6afb13c7.pdf
    • https://static.usrfiles.com/ugd/3d0627_67534eaa37bb45988734c6901d36fffd.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1952/files/meme_generator_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/zakobukir.pdf
    • https://cdn.shopify.com/s/files/1/0435/5021/2264/files/pagulizomixewuwadofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4592/0669/files/juzovojaforaletivefuzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2268/files/sri_aditya_hrudayam_telugu.pdf
    • https://static.usrfiles.com/ugd/90423f_96f8a31cc58f4d0d9ef92dfb2c4cf128.pdf
    • https://static.usrfiles.com/ugd/36f25b_60fa6fb86acb479c9db31fd2a50809d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5ec27176e5d4162ade2ca807066d017.pdf
    • https://static.usrfiles.com/ugd/87b9a8_2328fdb785e7470ca636568580195f1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe32f41167d64790aa6cbf2f5ab06d77.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdf
    • https://cdn.shopify.com/s/files/1/0462/6346/8189/files/vijekegerudagan.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/1001_albums_you_must_hear_before_you_die_mega.pdf
    • https://cdn.shopify.com/s/files/1/0430/1435/7145/files/fiwezanetota.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_off00007892.bin
5069bdcd83b42a995eab9b867531ecfb9a06a4624743527cb34300a9be966673
pdf-font-stream PDF embedded font (sfnt) at offset 0x7892 5256 bytes
font_01_sfnt_off00008a58.bin
8bec3338afdb6ee0aa52bfb58a4e241a4c6a10c6682e46be1f36ab583d5d0caa
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A58 10252 bytes