Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17909e97b238418…

MALICIOUS

PDF

53.6 KB Created: 2020-08-14 15:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fd50cb840f688147014d5a0d93104c3 SHA-1: b52548b71f26018aba9df7fc53e9c6750fcbdb80 SHA-256: f17909e97b2384183e7c4eca4167902a7a498cfe86a6cbc443973969a3ac6257
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to what appears to be a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented as a download for a PDF reader. This suggests a social engineering tactic to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis of the payload.

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=hack+vsco+full+m%25C3%25A0u+android
    • http://jaxoveme.traceymae.com/uploads/1/3/1/3/131379874/170ea.pdf
    • http://files.kaihsiao.com/uploads/1/3/1/4/131411147/rojumiga.pdf
    • http://geruzo.stripesofcourage.com/uploads/1/3/1/4/131437987/d8c3081c4c5a.pdf
    • http://files.madebyagirlinms.com/uploads/1/3/1/3/131381910/3643869.pdf
    • http://files.myfaithfulcatholicjourney.com/uploads/1/3/1/4/131406885/cbb4ab8c0e.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/pdf_reader_and_annotator_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/sociolinguistics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/jukaresosojuliraxunu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/fewesut.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/effect_of_alloying_elements_on_steel.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/race_car_aerodynamics.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/55114704361.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/xejesujetarod.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/67044203687.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/17699565017.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/judutuguna.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/pdf_file_compressor_software_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7428/8793/files/rajesh_rajamani_vehicle_dynamics_and_control.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/sozelezini.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006531.bin
ee28de6662755c1c9e5d608bfd1e6817d5a8693c03b2411de44da60d3bd28b60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 5484 bytes
font_01_sfnt_off00007730.bin
29390c342abc9c6ea1c5023ed911bcfb593a25085b5a107bdc4a50d6138767a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 3888 bytes
font_02_sfnt_off0000864c.bin
dc90b65cf6828942cc473f08ab303ac455221f21fef71394132de4ac097e047e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x864C 10900 bytes
font_03_sfnt_off0000ab4a.bin
703b9f83715d9e02530ed15139c334c44be8c8735b9f411f88c12ffdbed922be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB4A 18012 bytes

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