Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2235e27981a836…

MALICIOUS

PDF

40.7 KB Created: 2020-08-31 01:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67c8b3a93011c2eeec6678e59dea5f56 SHA-1: fea51bcc2ccf67f220608757d1cb459428e48e6d SHA-256: 0d2235e27981a836e596d6baae7a788280cf0b93124918b1ea4bccf6219cf8de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Pokemon black and white 2 rom hacks' and the URL https://ttraff.me/wix?keyword=pokemon+black+and+white+2+rom+hacks, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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=pokemon+black+and+white+2+rom+hacks
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_3628d332627241a2bf1f52c18571251f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e7bc79e0ba34dc097d6464112ca8e8f.pdf
    • https://static.usrfiles.com/ugd/01bc73_b4f83dabacd44a3d893f56087e7bbc43.pdf
    • https://static.usrfiles.com/ugd/d216cb_1f0375280235492784d65cf6bd55a919.pdf
    • https://static.usrfiles.com/ugd/b88e3d_1d0d9f1226df43cf93f8531bbb984334.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/case_studies_in_abnormal_psychology_comer.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/62876205959.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/78164888667.pdf
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/1834354289.pdf
    • https://static.usrfiles.com/ugd/0789d5_05959485e67c428e868ddf2fccfca180.pdf
    • https://static.usrfiles.com/ugd/b8c837_094417feb9f5406e903493728ffa6467.pdf
    • https://cdn.shopify.com/s/files/1/0443/4483/6252/files/6670547650.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/zudenajujulimukebaxebe.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_off00005f80.bin
0589ee9eb4cf15e7bfec3c5caa8f633df2d20e4d2944ff5cddefc8d28c18da20
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 5608 bytes
font_01_sfnt_off00007270.bin
a470fc545118b3511bf2e1ff78b8cf3c31d247b52888905e234e1ad45f2dcb52
pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 10464 bytes