Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbe1d638f85a053…

MALICIOUS

PDF

69.8 KB Created: 2020-09-01 01:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdd7ef13711d1db0dac55c866cebb7f3 SHA-1: 0cc7d12f41cca6af374e52788fa1bcd35b1b147c SHA-256: dbbe1d638f85a05391b699aef62b889a734b014083a1e84b76fabc4797020164
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is designed to trick users into clicking the link, likely to download further malware or be directed to a phishing 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.
  • 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.cc/wix?keyword=bmeg+hog+feeding+guide
    • https://static.usrfiles.com/ugd/f967ac_e7c7c89cfea149249b811eb7aa5af283.pdf
    • https://static.usrfiles.com/ugd/fef806_31f7a1553c9c4085934b03603e010163.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cbf90df8ae845fba507f72abba8354c.pdf
    • https://static.usrfiles.com/ugd/7598fa_cf2320a3587f4ee88f9c99dd40a56aae.pdf
    • https://static.usrfiles.com/ugd/73cb9e_0f2c673d95f94e9eb48e7c260257ffa4.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/3830296394.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/82315675603.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/sports_medicine_vocabulary_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/51514911933.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9074/files/waxavamun.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/amex_priority_pass_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0448/8983/3639/files/bhagavad_gita_as_it_is_in_tamil.pdf
    • https://static.usrfiles.com/ugd/b8c837_538721c2a6c542a3807f4fcdeba1b002.pdf
    • https://static.usrfiles.com/ugd/b8c837_decd755ffaf740bcaa3f681a02f97f30.pdf
    • https://static.usrfiles.com/ugd/857e61_74cbcbf2b88f495a974f6f14bf695c30.pdf
    • https://static.usrfiles.com/ugd/2813e2_d747dd6d68ed463fbfbd98b839b0a3ce.pdf
    • https://static.usrfiles.com/ugd/32acb1_ec351f4c67544741a7107d33926350fe.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/
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/82315675603

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d27c.bin
1d37da579d56789507dc99784a45e9a19b18089f15993a098713ce17200ba06d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD27C 4852 bytes
font_01_sfnt_off0000e2e4.bin
da085629f545058456383b82c82c25ca300a05f4cdab07b33be871f4bb381167
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 11860 bytes