Malicious PDF — malware analysis report

Static analysis result for SHA-256 74bebc76262ae1cc…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 00:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 947776797491c30f9d00d69f4b70544d SHA-1: dabb10a4b6be6fe905abd83b8f897e1bab9b43a1 SHA-256: 74bebc76262ae1ccb6a6172152db3fbb17fa98d99c521d5bd0ad59a2d4d0d673
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a download for piano sheet music. It also functions as a link farm, pointing to numerous other PDF files hosted on various domains, likely for SEO manipulation or to spread malicious links further. No scripts were extracted, but the primary malicious action is the redirection to a harmful URL.

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.com/pify?keyword=hallelujah+piano+sheet+music+for+beginners+free
    • http://files.ozarkcountryoutfitters.com/uploads/1/3/0/7/130738755/afbcaee4ec92.pdf
    • http://files.serpentinecommunitygarden.org/uploads/1/3/0/7/130739631/1814424.pdf
    • http://tepes.apeculiarthud.com/uploads/1/3/0/8/130873851/2d159d7.pdf
    • http://files.ankawini.com/uploads/1/3/2/7/132740553/3158072.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/death_note_movie_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/gekimamozivumewapusobexix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30072581460.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/5465414042.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/15861763680.pdf
    • https://cdn.shopify.com/s/files/1/0428/4062/1222/files/vakonipol.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/44088711134.pdf
    • https://cdn.shopify.com/s/files/1/0448/3085/1233/files/ballade_pour_adeline_partitura_piano.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_off00005d0f.bin
cc7c3aad2aaee041190cdbb025ed4066e56999dbe12065d7ceb2bd29b1dabb12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0F 5608 bytes
font_01_sfnt_off00006ff1.bin
192b4cc26d0fe2153e103d27c155095425c9eca524cf7b6a92fa8363902fdfd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 13332 bytes

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