Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e3f4b0c841b289…

MALICIOUS

PDF

39.3 KB Created: 2020-09-14 07:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e41ac0e82cf6d7065aa3b69a003aa656 SHA-1: 929566aaf320ab8f9aa6a31672ea9718fac5140e SHA-256: c7e3f4b0c841b2891782dcf60e5d509bdd1484987a2b1cbf58b530bc6f20d28a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link directs to 'https://ttraff.me/wix?keyword=1v1+basketball+game', which is flagged as a known malicious redirector. The presence of a large link farm and a malicious redirector suggests an attempt to manipulate search engine results or lead users to malicious content.

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.me/wix?keyword=1v1+basketball+game
    • http://files.phchastings.org/uploads/1/3/2/8/132814593/zewarurasanibe-wemagirib-moxojo-mipitoses.pdf
    • http://depetub.uroresident.com/uploads/1/3/1/4/131482988/9015037.pdf
    • http://files.ogdcl-nthp.com/uploads/1/3/1/4/131407901/jafipijebowa_vopofip.pdf
    • https://static.usrfiles.com/ugd/510691_6f8c07353c894fbcb4e8c0ffb519fbd6.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_2dfbb8df39d7439689d107245053ec73.pdf
    • https://static.usrfiles.com/ugd/e6e573_62ecadeafcbd4358aa3bd96ab9693095.pdf
    • https://static.usrfiles.com/ugd/197ed4_95fb697d7c0f4e40a940555fa5023703.pdf
    • https://static.usrfiles.com/ugd/ecec20_2bb23625e35844639719e034e486b42f.pdf
    • https://static.usrfiles.com/ugd/76dd3d_2f62352656734b058a059802f57aedee.pdf
    • https://static.usrfiles.com/ugd/7f5dc5_7dc554e1285d4c878462b3b5c4f537a2.pdf
    • https://static.usrfiles.com/ugd/e4a001_7fddc1b4ae41460aa0733719d8abe6cb.pdf
    • https://static.usrfiles.com/ugd/1decf9_969a8b254c244d32af140390e045dde4.pdf
    • https://static.usrfiles.com/ugd/b8c837_59d6a22c28e24ac4a61b320cde793385.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e0f500d713148e38461148786b0980f.pdf
    • https://static.usrfiles.com/ugd/479fa9_603696abae854f60a8c306f7e9194def.pdf
    • https://static.usrfiles.com/ugd/0582e0_c0e8c4cf1ca04f5a92653003cd32e04a.pdf
    • https://static.usrfiles.com/ugd/f80014_bfe6b9c9284a41b687d0489f61d86bcb.pdf
    • https://static.usrfiles.com/ugd/cc14e4_7cde890cf36c4ee4b1ac00997d4688e5.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_off00005c73.bin
8dc167fd69a532c8e5fa802cda09f599ec2041b3badf80d59ae1724279c1df11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C73 5132 bytes
font_01_sfnt_off00006de6.bin
d8eb6d917ef9810daceb0980985275bceff2653ee7227c09d5f4a64923906f30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE6 10064 bytes

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