Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca639553f5285a2…

MALICIOUS

PDF

43.8 KB Created: 2020-08-12 09:36:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 563eeac96ea921be753d4fad9d291e04 SHA-1: 7af54af68a7995509fbd5ef9d6030e0e929ec830 SHA-256: 9ca639553f5285a2b6ad265221eaeea9540ed4a5c61042b0e5b1b706de1605d8
128 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body also contains a call-to-action phrase, suggesting a social engineering lure to trick the user into clicking the malicious link. The presence of a malicious redirector link and a link farm indicates a likely attempt to drive traffic to malicious infrastructure, possibly for further exploitation or phishing.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+to+word+converter+editable+text+online
    • http://loxej.edmontoncwl.org/uploads/1/3/1/6/131636644/salize.pdf
    • http://files.ssespta.com/uploads/1/3/0/7/130776661/1511188.pdf
    • http://files.tvlsolutions.com/uploads/1/3/2/6/132682723/kumetedusi_dudusixozit_gewikibozaju.pdf
    • http://fusuxovo.frostedsugarcookies.com/uploads/1/3/2/3/132303382/busejajonapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/mastering_elliott_wave_neely.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3762/files/31726688543.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9263/files/best_pc_tune_up_software.pdf
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/72589525438.pdf
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/bodegirugojofiwijos.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/weburonoribexanenepejuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/dave_rubin_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/guwatotebazarinarori.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/45037320417.pdf
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/derabitasinemajig.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/facebook_logo_download.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_off00006cd5.bin
7b9dbb2e7ea5dd626f30b02dfbdffc238ea0d223b54e52bc3a39444d6aa43923
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 5200 bytes
font_01_sfnt_off00007ea3.bin
ddad5c96ac321c77c2f8e6024a808567dcd3916b71101c88aa899901a5f0fed5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA3 10420 bytes