Malicious PDF — malware analysis report

Static analysis result for SHA-256 53fd70fe33456272…

MALICIOUS

PDF

40.7 KB Created: 2020-08-31 09:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 725a47cfd36dd2df311a98a08df6855a SHA-1: 1b55f827c8480fb662f895c2389b0f01891cef2e SHA-256: 53fd70fe3345627247d606882ed31f39b935b3b9ad93d4d60947127c919517f8
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a malicious redirector link. It also contains a large number of embedded links, forming a link farm, with the primary malicious URL being ttraff.com. While many other Shopify links were extracted, their reputation is confirmed benign, suggesting they are used as a lure or distraction. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure.

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/wix?keyword=nitrile+vs+vinyl+gloves
    • https://cdn.shopify.com/s/files/1/0435/5109/6993/files/75210100984.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/fikajutavulelegig.pdf
    • https://cdn.shopify.com/s/files/1/0428/2993/8855/files/amanda_lepore_doll_parts.pdf
    • https://cdn.shopify.com/s/files/1/0459/9123/1647/files/can_chiari_1_malformation_cause_seizures.pdf
    • https://static.usrfiles.com/ugd/e33828_b49670bef18443a0b35f7e0e36fc6ee2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b16779b4134a4a3bb83104685d2841b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_0564db30819642d980ce7fa014338bad.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b97337ce6814cd8830409d92ae1f946.pdf
    • https://static.usrfiles.com/ugd/9e53d4_f0e2438738e147a1b117a7c8c0744efe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/zadezugirutuwifumirexolav.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/desarrollo_epistemolgico_de_enfermera.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0111/files/79340739281.pdf
    • https://static.usrfiles.com/ugd/3e9e83_fefc4bac3b424bf7af34274ebb3797ae.pdf
    • https://static.usrfiles.com/ugd/8127dd_df819bc5f6ab400f9b7c1336d9953a44.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1c55af24b0a4521af701ff3025378bd.pdf
    • https://static.usrfiles.com/ugd/33a2e4_d777007b6dc54f22a98178d9e513e653.pdf
    • https://static.usrfiles.com/ugd/b56239_4fd1aca281414d00aee0aa23560f99d2.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_off0000638a.bin
2839d0f9de6baeb798aa9aff0ce54f3dd5733fc2c98341a0a1c642da62adb675
pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 4776 bytes
font_01_sfnt_off000073ec.bin
75f6a3d9db8f998aac081453d579fd990ffe34b98c81e04ed37743e038baed8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 10116 bytes