Malicious PDF — malware analysis report

Static analysis result for SHA-256 005b04cbf9834389…

MALICIOUS

PDF

45.4 KB Created: 2020-08-30 10:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7a9770efb016216bea3e6a1c89a06d0 SHA-1: e0e08364420872b5326a379d296b6a26999ca796 SHA-256: 005b04cbf98343894648857be943f69a6772d5798ee036fb48a810572432335a
154 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.com/wix?keyword=yasin+suresi+arap%25C3%25A7a+metin+pdf, which likely serves as a lure to download further malicious content. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector.

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=yasin+suresi+arap%25C3%25A7a+metin+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/dediwesibexuvokojekivuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/xanufapufelufu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/dre_beats_powerbeats2_wireless.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/80051549542.pdf
    • https://cdn.shopify.com/s/files/1/0434/8231/6957/files/betaina_bula.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/bugazikej.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/takekozunam.pdf
    • https://cdn.shopify.com/s/files/1/0441/0540/0472/files/59297765739.pdf
    • https://cdn.shopify.com/s/files/1/0462/2696/4631/files/tipiwilalotelitupajogez.pdf
    • https://static.usrfiles.com/ugd/5cf23b_86510d504d4946de8e647bba2d3a2cf2.pdf
    • https://static.usrfiles.com/ugd/b8c837_77221a66c268461892ee2ec5bfdc527b.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://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d6.bin
a9ad9ad0a96fe26ac6797df49b1e626b392e9366165fda36ca18888fb22e3261
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D6 1636 bytes
font_01_sfnt_off00007014.bin
13798c0a1ca1eeecb60eb75ade0312ea887935212338b7a6030039a7a3b17944
pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 5300 bytes
font_02_sfnt_off000081f9.bin
a21a543fb3b703262267c2adeecea5434e857cd4f50272ae3a9f9e2daea7f388
pdf-font-stream PDF embedded font (sfnt) at offset 0x81F9 12148 bytes