Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac7aa919266a4ba9…

MALICIOUS

PDF

46.1 KB Created: 2020-08-31 14:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56eae7c2b6fa330ba7699032f6192c0c SHA-1: a8a95282d4e18cb9b670e578e9b778702e81e015 SHA-256: ac7aa919266a4ba94bf68beecb75894c6150d9f36c1ba13d565b22ab939974d0
120 Risk Score

Malware Insights

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

The PDF file contains a prominent link to 'ttraff.cc', identified as a malicious redirector. The document body, though heavily obfuscated, includes the same URL and a keyword suggesting a lure for 'My best self brownie badge requirements'. The presence of a large number of external PDF links, many pointing to benign Shopify domains but originating from a suspicious redirector, further supports the malicious intent. No scripts were extracted from this sample.

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=my+best+self+brownie+badge+requirements+pdf
    • https://static.usrfiles.com/ugd/defdb4_6120864769024530994a286ad915cd44.pdf
    • https://static.usrfiles.com/ugd/4d6844_fb6255433d46459b81bdd42cac54c987.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_75da447183ad4fcfb131748c0f2970f3.pdf
    • https://static.usrfiles.com/ugd/37321e_974363a032cc4cf0a15e233107d76b58.pdf
    • https://static.usrfiles.com/ugd/ade4e6_0f8a9ceca1aa4eb48c2cf4d71bf5ac17.pdf
    • https://cdn.shopify.com/s/files/1/0452/6299/5617/files/68400529981.pdf
    • https://cdn.shopify.com/s/files/1/0434/0413/2508/files/printable_coordinate_graphing_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/discord_markdown_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/0113/3731/files/zonaletomalapevufego.pdf
    • https://cdn.shopify.com/s/files/1/0430/6334/5301/files/22525667474.pdf
    • https://cdn.shopify.com/s/files/1/0435/3766/2103/files/machines_of_loving_grace_john_markoff.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/konudujidufivulubiwu.pdf
    • https://cdn.shopify.com/s/files/1/0465/0074/1272/files/anari_movie_songs_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/construction_company_profile_template.pdf
    • https://cdn.shopify.com/s/files/1/0439/0574/5051/files/muxirarubomizewibilusa.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_ba210e72f26c4acab2d145099953fee5.pdf
    • https://static.usrfiles.com/ugd/48f461_6d7b0328534340e3926ac676331b4547.pdf
    • https://static.usrfiles.com/ugd/5b5da7_deec79334655489684c19e465b6a25fa.pdf
    • https://static.usrfiles.com/ugd/8cbfce_452afda42f604bdb9221e7f0b7e587f9.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_off0000677b.bin
4e951d45792a1f6960d8e5e473d83d1556bba7816b7e80b3e506892fead14d5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 5708 bytes
font_01_sfnt_off00007ad4.bin
5453d9ea7c706cfe84a165d433bf015a350820f90cdadfa550a46ba29d5bc928
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD4 9984 bytes
font_02_sfnt_off00009d03.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D03 4324 bytes