Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98e450c0b0c9a09…

MALICIOUS

PDF

43.0 KB Created: 2020-08-31 22:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05062448198abb5d43a66ed3c0bd760a SHA-1: fb0a5140f148e5399475fbdee842794e70105101 SHA-256: d98e450c0b0c9a0930e4cf6f4fc58e73eb74c9e9a70dc957cb54d2e5087a01dd
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=timeline+flowchart+template'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on static.usrfiles.com. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking filename, suggesting a lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=timeline+flowchart+template
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/autobiographical_memory_interview.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/pifasaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/wunonete.pdf
    • https://cdn.shopify.com/s/files/1/0432/8089/2057/files/staphylococcus_aureus_skin_infection.pdf
    • https://static.usrfiles.com/ugd/b8c837_4894bbb1a51b432d995f3a6f5d64b0ce.pdf
    • https://static.usrfiles.com/ugd/b7ab08_195ceeb466b44e77afea3b857b719345.pdf
    • https://static.usrfiles.com/ugd/7f929b_3c675e8742014dc994a1a88d77916b9a.pdf
    • https://static.usrfiles.com/ugd/eb6612_62043a7164124f9894bb5c840995e12f.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c47477d0a47479489360f4e2d25dbbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_590d85f9c2764883a46befadc1e87379.pdf
    • https://static.usrfiles.com/ugd/7f929b_e7a171ada4bb42e88b44bbfda772d5b8.pdf
    • https://static.usrfiles.com/ugd/8e1900_0e93de641fec4c3893b885c2c139ac03.pdf
    • https://static.usrfiles.com/ugd/edb4a7_05243045f9114c7cae373492a193c73a.pdf
    • https://static.usrfiles.com/ugd/b8c837_60f03daf61db422c89e331811bd28e64.pdf
    • https://static.usrfiles.com/ugd/10a4aa_47b70805d95d4265bfecb53c0718d56a.pdf
    • https://static.usrfiles.com/ugd/5ecadc_75ac32e387944dcaac7a23c226578da9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc6933162151455281b8f86a392b2165.pdf
    • https://static.usrfiles.com/ugd/b8c837_132628c7ef364e36a9117a681bf6acdf.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_3541425e35ed46a58afaddb8cbc437ff.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_off00006c31.bin
00a333e1a03415b850df0e3854b588547865d9fccf9f37b5d27fd1fe4634783f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C31 5116 bytes
font_01_sfnt_off00007d81.bin
665269c2d1b6978a733ba22ac7d166e11f9c2129a7d610c69639db2993b68443
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D81 9856 bytes