Malicious PDF — malware analysis report

Static analysis result for SHA-256 90fd94d3895cc1f0…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 05:12:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7682ec7ac95ab52d3dfece4e3a2d8798 SHA-1: e51c8ea07212e589207290d0bed9801800eb711d SHA-256: 90fd94d3895cc1f011e2a65b6b6f7545ee1a22100a885c76e3b6d87b10889ff4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised as an answer key for a reading level test. This suggests a social engineering tactic to drive traffic to malicious infrastructure. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and the link farm strongly indicate a malicious intent to redirect users to harmful content.

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/pify?keyword=measuring+up+reading+level+h+answer+key
    • http://xukip.meadowpta.org/uploads/1/3/1/4/131453323/bonuletopote_gamun_gigebepejid_zeponigadi.pdf
    • http://taduxi.gumbogiftsandgallery.com/uploads/1/3/1/3/131398102/6095452.pdf
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/xuzinawaxatalunuzej.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6757/files/99456834008.pdf
    • https://cdn.shopify.com/s/files/1/0431/0034/0381/files/dokevatusogetix.pdf
    • https://cdn.shopify.com/s/files/1/0438/0730/9986/files/dieta_cetogenica_menu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/53975865871.pdf
    • https://cdn.shopify.com/s/files/1/0436/3229/6089/files/fajivumanozuzejeletovugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/97586918719.pdf
    • https://cdn.shopify.com/s/files/1/0440/2305/4501/files/biogas_plant_design_calculations.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/sheet_music_kevin_leman.pdf
    • https://cdn.shopify.com/s/files/1/0432/7083/2291/files/21171710462.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/femixizozajonoxalaf.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_off00005ea3.bin
888525987e6027176fcb46d3f66e25bde4309cd8c4e9b9a4d73a855ad1c4dd2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 5544 bytes
font_01_sfnt_off0000719b.bin
10ad7ba69b588539ab1a23fe5eb83bcfaa1ec4a134c8e548e69ed698c703e0fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x719B 10596 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.