Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4750ea0053cc34…

MALICIOUS

PDF

36.4 KB Created: 2020-09-01 01:24:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80fd75ab1b521a2804cdab504c404a99 SHA-1: b373d963405105f2e41e3de4bf5cb136216f522d SHA-256: 9a4750ea0053cc34ebbd10cccf86e93c43b7f1c67271411e02927e98b2cbd17d
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a movie download, leading to a malicious redirector. The primary malicious URL is https://ttraff.cc/wix?keyword=avatar+filme++legendado. The document body is heavily obfuscated but contains this URL and other PDF links. 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=avatar+filme++legendado
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/47425082372.pdf
    • https://cdn.shopify.com/s/files/1/0455/7009/7317/files/itinerary_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/nivopewewisufobuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://static.usrfiles.com/ugd/b8c837_93df851ba33a428ba21dde46959a3e73.pdf
    • https://static.usrfiles.com/ugd/b916f4_5e92c9d0810b4ce6a6197603a74eec34.pdf
    • https://static.usrfiles.com/ugd/12daa7_894f9fc20d0e4f6fadea62455544d525.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d2de1530d9a40f7a8d9d9c9c6652491.pdf
    • https://static.usrfiles.com/ugd/d54300_0fbbeb9aa36d474d855353bc8baff933.pdf
    • https://cdn.shopify.com/s/files/1/0437/7978/4866/files/jijaxinuzejigedunisibupu.pdf
    • https://cdn.shopify.com/s/files/1/0464/9805/4312/files/dragon_age_inquisition_divine_election_guide.pdf
    • https://cdn.shopify.com/s/files/1/0461/7420/8163/files/daraz._pk_app_free_for_pc.pdf
    • https://static.usrfiles.com/ugd/72b0e7_936a4433de9a4b81a1d40692c0294b28.pdf
    • https://static.usrfiles.com/ugd/f0f215_0fb1abdb4d1e4db08d7dd5b131b31b0c.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_off00004f1d.bin
a325014dc896801990e0ec13ed0fce151d98a9f021530e72d873de062107c654		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1D 5100 bytes
font_01_sfnt_off00006068.bin
84d1ccda13208789d3cb628936f2d3ae13a68ef60300ad3030bbc48436d3b70b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 10672 bytes

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