Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aafddac021e54c7…

MALICIOUS

PDF

49.8 KB Created: 2020-08-29 07:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df345a55e83ebacce9bf05380c920420 SHA-1: f525576f00ea8ad6f2671277ae0adb143c9224ea SHA-256: 5aafddac021e54c7a36422efd0ebab48dd509564a3e694a4c8d1c15016d57b14
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a "grow guide". The presence of multiple external PDF links suggests a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=pineapple+express+grow+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_57da1a70ffb54bcdb5b94610ada5d0ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c9dc17f58ea457fae53f3754bd9556e.pdf
    • https://static.usrfiles.com/ugd/b8c837_8eb1866d71f94eedb18dda8893a49f48.pdf
    • https://static.usrfiles.com/ugd/b8c837_2178fc3e576e45d3806a5c0956ce27b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_644e97eb98dd42d49388835904e8fcda.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed8f9bdbfa0e447d8cbe318a72c2cbf6.pdf
    • https://static.usrfiles.com/ugd/b8c837_556607dc49464d3d904b3fb325880214.pdf
    • https://static.usrfiles.com/ugd/b8c837_075b78366e3b4df1ba4a09d674a30a43.pdf
    • https://static.usrfiles.com/ugd/b8c837_e89481e684a14465a2f29f9b678df186.pdf
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/28938262701.pdf
    • https://cdn.shopify.com/s/files/1/0440/4723/7285/files/softonic_avg_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/15805296529.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6791/files/algebra_and_trigonometry_4th_edition_stewart.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2046/files/bholenath_chilam_photo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/xerimofiduvegafevemikur.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/child_specials_fallout_shelter.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008466.bin
ad0eeebedd3b8c6e5efa2cac1f752de9e95eb0686c823889b87458e7e58d6fb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8466 5288 bytes
font_01_sfnt_off0000967a.bin
684d2f88836caae20dcddc6572cae6122aa8f12365741277999cc296989903f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x967A 10504 bytes