Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45a0727936b37df…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 06:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caacecf6dc924a296125325ffef97b65 SHA-1: 1d709c13902bf3648d7159dd180d3afd116f02d2 SHA-256: c45a0727936b37dfa143b18950cb80e598d4206264141fddc1afe77cdde769b9
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a lure related to 'qa interview questions pdf' and embeds numerous links. One of these links, https://ttraff.com/wix?keyword=qa+interview+questions+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to trick the user into clicking the link. The presence of a link farm and a redirector points towards a phishing or credential harvesting attempt.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=qa+interview+questions+pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3773/files/ungleichnamige_brche_addieren_und_subtrahieren_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/90323097919.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/zefogaxujaxumiwadutan.pdf
    • https://static.usrfiles.com/ugd/430cb2_484016c80c2d4fa68c6483feba530bd7.pdf
    • https://static.usrfiles.com/ugd/12f4eb_821c255d38ca431caf9f633a2ea757d0.pdf
    • https://static.usrfiles.com/ugd/917232_95c538d39d444404b14b133e66a62024.pdf
    • https://static.usrfiles.com/ugd/b8c837_7547b62a960b4f7ba97de62b12829a1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b34f62ec83c045cb9e642d86486e82c6.pdf
    • https://static.usrfiles.com/ugd/e6092c_0e4bd3617f72420d85d55a5075e2b24f.pdf
    • https://static.usrfiles.com/ugd/eb4c03_816cd633b6ab46de841916900e8c54b0.pdf
    • https://static.usrfiles.com/ugd/0d002d_2345f36ea3224ad68647eb8edff9e54a.pdf
    • https://static.usrfiles.com/ugd/b8c837_04a9ea6336e54b33a7498d49155cc6e9.pdf
    • https://static.usrfiles.com/ugd/38bf1f_9a28100d377041f291b3dd064636285d.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_off00007143.bin
508d575813da507204e712db40b57a066796f928bf1007306132617f738f3c13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7143 5340 bytes
font_01_sfnt_off00008391.bin
432e7cfed8c89c56451a0c732b1d340aaa79751fa96a99c8ada058839c09980d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8391 10636 bytes

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