Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf3cbd1993635b56…

MALICIOUS

PDF

76.4 KB Created: 2020-09-16 23:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57074301f7a17134c449bf9a24cb55b0 SHA-1: 53366c94bde4030d845d4af2ec3383ff8251f0dd SHA-256: bf3cbd1993635b567422230134ea8c681d23e7f370ba8c4b9392cacf4d6278fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link to a known malicious redirector, ttraff.me, disguised as a download link for a "new world of darkness pdf download". This indicates a phishing or social engineering attack. The PDF also contains a mass external link farm, suggesting an attempt to manipulate search engine results or distribute malicious links. The presence of a visible LOLBin command execution instruction further supports the malicious intent, likely to execute a payload or redirect the user to a harmful site.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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.me/wix?keyword=new+world+of+darkness+pdf+download
    • http://lapemo.theatrere.co.uk/uploads/1/3/1/4/131453494/dogena.pdf
    • http://files.wileyscience.com/uploads/1/3/1/4/131454850/jewezapukagoji.pdf
    • http://saximej.skybluemusic.org/uploads/1/3/1/3/131380598/lagulodawode_wizoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/48014006788.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/31440926247.pdf
    • https://cdn.shopify.com/s/files/1/0438/0839/1330/files/babyliss_pro_nano_titanium_curling_iron_manual.pdf
    • https://cdn.shopify.com/s/files/1/0449/8286/1982/files/alice_munro_runaway.pdf
    • https://8a95a879-75b4-4793-8f71-ba7fa9615b04.filesusr.com/ugd/217b8a_aae86424b42e418baecaff6691ac70b8.pdf?index=true
    • https://b22fa011-6017-4958-a1df-2e82be9de650.filesusr.com/ugd/70c1ec_2081a29c34d142aa8e459fcf864be25a.pdf?index=true
    • https://8e5b5b08-2a4d-4ea1-8a0d-a65dd89b3c2a.filesusr.com/ugd/1e557c_d7905b02499841fab1cf266c1ab9c0bc.pdf?index=true
    • https://b58acfb8-c740-42c7-98fa-13c446a95399.filesusr.com/ugd/227d0f_aa671f0a26ae41c9a68c4bad24702eb8.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/7008/7587/files/zigutizoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/businessman_movie_hd_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0463/2828/3291/files/1998_yamaha_grizzly_600_owners_manual.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_off0000ef0c.bin
892aa2b3bf4eb7a4cda85856a180c983cc7eee7fbbdf5dcee75889381b96c2e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0C 5160 bytes
font_01_sfnt_off000100c1.bin
b52100734d683c34daac863762cac0e6573c3cebc19022d2cc58f15cda2e437b
pdf-font-stream PDF embedded font (sfnt) at offset 0x100C1 10420 bytes