Malicious PDF — malware analysis report

Static analysis result for SHA-256 c79d9beef742bae5…

MALICIOUS

PDF

56.0 KB Created: 2020-09-14 09:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73b1d6bd9e3fc72b40bcd5b1b56576bc SHA-1: 7e3517b90cb94747ea2868d4f01f78922a091be3 SHA-256: c79d9beef742bae56016d133d544f385ae0196759ca2f1e34d5af288e5eccd58
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=minds+on+physics+internet+modules+answer+key'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links to other PDF files hosted on various domains. The document body text, though partially corrupted, includes the same redirector URL, reinforcing the malicious intent. The primary attack pattern involves luring the user to click on these links, which likely lead to phishing pages or malware downloads.

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.me/pify?keyword=minds+on+physics+internet+modules+answer+key
    • http://files.lilmissrealtorsherry.com/uploads/1/3/1/6/131637853/tasixuwiger_keragezale_ginidokivefosa.pdf
    • http://files.covenantasheboro.com/uploads/1/3/1/4/131437330/05510a.pdf
    • http://volituvup.sonicblessings.com/uploads/1/3/0/7/130738697/latovikefalodebis.pdf
    • http://files.restoration-activationproject.com/uploads/1/3/0/9/130969632/d22806a76759349.pdf
    • http://files.kathrynmccawley.com/uploads/1/3/1/3/131380107/7fc668cd4.pdf
    • http://files.jeffersonhealthcarefoundation.org/uploads/1/3/1/4/131406434/tasowinegif.pdf
    • http://files.thenectarylkld.com/uploads/1/3/1/4/131438418/gejatezujosugizi.pdf
    • https://static.usrfiles.com/ugd/c8a981_85eb944862b444ab932eaec945fa0298.pdf
    • https://static.usrfiles.com/ugd/bb13a2_8b25a09745004e16a0e3a27f37a0a8d9.pdf
    • https://static.usrfiles.com/ugd/5ea4d5_307133baaf634cacad122f0c0662ca4a.pdf
    • https://static.usrfiles.com/ugd/d3758e_a824f8e3e0cd443b860dad519aac564c.pdf
    • https://static.usrfiles.com/ugd/46429b_0ba18d9e806347f6b97765a15fd257fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_b1b6ad2dd5b0418cac45e59abcc4f372.pdf
    • https://static.usrfiles.com/ugd/0582e0_13aa5eada8624f9f8ebb329cee6560fc.pdf
    • https://static.usrfiles.com/ugd/87b9a8_953a885e97534dbc93d8dba1e57ceb85.pdf
    • https://static.usrfiles.com/ugd/510691_503f1ec5dddd458991a99400401b9a66.pdf
    • https://static.usrfiles.com/ugd/cf5aa9_272133f664af4861b300dcf528c95551.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_off000099ab.bin
62f54135eb4734082f1d2ef86acc8b7d7df5f785cb864d0fca5b0d27c52a300f
pdf-font-stream PDF embedded font (sfnt) at offset 0x99AB 5576 bytes
font_01_sfnt_off0000ac9b.bin
258ea5ab0078217b5934e4bfb9b21a98f79b7e2347a8d1245dfd96c378609eee
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC9B 11276 bytes