Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2762a368a1d6a7…

MALICIOUS

PDF

56.5 KB Created: 2020-09-01 06:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 129fdb6a3e2fe68f9f591cd1a7f2297f SHA-1: ff0ca14408b82f38b7cc19bc63988c0a255ef159 SHA-256: 6d2762a368a1d6a7ce641566d2dab613bc78e64fe6afa7eb11cd1b9045c2fcd5
154 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that point to a redirector service, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'business analyst resume pdf' and the malicious URL itself. This suggests a phishing or redirection attempt, likely to lead the user to further malicious content or downloads.

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=business+analyst+resume+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/a91264_250380e134444c288b1ceed4a672d7bc.pdf
    • https://static.usrfiles.com/ugd/5b604d_a0dbd2acfd254becbb9d9376d528bfc9.pdf
    • https://static.usrfiles.com/ugd/79e0dc_1de74150fae544a6b737ca965750ca8f.pdf
    • https://static.usrfiles.com/ugd/f80014_33a9924501224e47b3af75704cbe86e4.pdf
    • https://static.usrfiles.com/ugd/ae15ca_e37a57734ea64a5199927eec8f57f247.pdf
    • https://static.usrfiles.com/ugd/b8c837_32d97ab57f0a47c9ab6851cf43d13cac.pdf
    • https://static.usrfiles.com/ugd/e2c250_bb2d9dbbe72f4238844c2e6620857fe2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89788869c5943fcbffa2295ffcc492d.pdf
    • https://static.usrfiles.com/ugd/d01287_e63cbc8e19d5487b9c2c2a6dbd387a0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_1194370f7fe24c9aae7dbc812492f2fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca669c5e18164dc7b1772e1030984331.pdf
    • https://static.usrfiles.com/ugd/b8c837_0914cf91d1d74eb097ffca1d1712fcdc.pdf
    • https://static.usrfiles.com/ugd/b48b60_4c8bb92bba484b87bc1d4b264819b3a7.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_off00009f6b.bin
d59dc9d2892346b9e7ab0c53d0188993143895f15dba8c10a02f3bfad5da4e78
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F6B 5336 bytes
font_01_sfnt_off0000b188.bin
4ea2fff416817c01fdccf409f7dad32db273116db6f2243ffd0938a655878099
pdf-font-stream PDF embedded font (sfnt) at offset 0xB188 10492 bytes