Malicious PDF — malware analysis report

Static analysis result for SHA-256 0391a34f9a38f1a5…

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 01:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45e60947bc461e7649efeb1cfe644ce8 SHA-1: cbf85c57a7c0f9ad82ce6fec737c5e72573c58bc SHA-256: 0391a34f9a38f1a543fd2193fe421a57d9780a3ffb99f71e8ea24dccb7b87712
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.cc/wix?keyword=draverik+el+reloj+tasa, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body itself contains obfuscated text and the malicious URL, suggesting an attempt to trick users into clicking through to a potentially harmful destination.

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.cc/wix?keyword=draverik+el+reloj+tasa
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/ribaporogiwawotoroxawig.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/jijamakivoxoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdf
    • https://static.usrfiles.com/ugd/0049ca_7c91ddcf80ba4e6c9b3d2ae4a86a62a7.pdf
    • https://static.usrfiles.com/ugd/e745be_2174bd57beba4471868e18621148be8f.pdf
    • https://static.usrfiles.com/ugd/b11f6d_29824e83570a407b8e9cf2c4b43e9fa0.pdf
    • https://static.usrfiles.com/ugd/b8c837_2dec5066c5b74e60b54c8eea77a3ec30.pdf
    • https://static.usrfiles.com/ugd/2274a7_56e471a446784bc4bcae28c6b65cd4ed.pdf
    • https://static.usrfiles.com/ugd/eb6612_0baf989734ed4690b06df99fd9d7213d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4ccd9aa9aa04c398b99abf78408c365.pdf
    • https://static.usrfiles.com/ugd/d54300_ca68be067ccf41568fbe0ab3976c3f2c.pdf
    • https://static.usrfiles.com/ugd/20d83a_7835991c59b94a4a98f98dcc89cd7ab1.pdf
    • https://static.usrfiles.com/ugd/b8c837_442a4f9bbafe4f37acc50f307a1d90f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1b9eaafee024ac588beca8e65b2ae98.pdf
    • https://static.usrfiles.com/ugd/9374a7_542bd25d55664154b29224a40382f516.pdf
    • https://static.usrfiles.com/ugd/8b9728_ac4446d3d60e4e0fb05dfc326b8cde5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd3f338279524cbdb4d0238203f1e331.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_off0000705a.bin
faca6768e49f2668d52c368d1cf79260a43c9f0e79e8822e886186d0a3772a08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705A 4876 bytes
font_01_sfnt_off0000810d.bin
417e3ea72c1b47314c84ed8e70ec445e85efa435570d3d848f00c369ba475e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x810D 11964 bytes

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