Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d08ed3020741436…

MALICIOUS

PDF

46.8 KB Created: 2020-09-03 08:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20fd3d30f43589fd4358e53c8eab8e01 SHA-1: 9a6b491c41ccb132b433553a1a1ca516a7f8a15d SHA-256: 6d08ed3020741436a68595341abd1fb6001ecd495138630290b6cb5bd054c7ea
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure, and the document body contains a URL that appears to be a lure for movie-related content. The presence of a link farm suggests an attempt to distribute malicious content or traffic to a large number of users.

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.link/wix?keyword=7th+sense+movie+video+songs
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/516793_a6ab2979b38a474d9da432eca7211727.pdf
    • https://static.usrfiles.com/ugd/c162b3_0e76076e867f4096afd80119ea265f36.pdf
    • https://static.usrfiles.com/ugd/0047a4_cde76b31adf54cd193e674fa119b1b53.pdf
    • https://static.usrfiles.com/ugd/99a8f2_893b011f2a2841e4b4ef30b9aa2cd85f.pdf
    • https://cdn.shopify.com/s/files/1/0432/3658/9730/files/jibokexuwonipiliduxo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1782/8512/files/16717184773.pdf
    • https://cdn.shopify.com/s/files/1/0436/8872/2597/files/mufufe.pdf
    • https://static.usrfiles.com/ugd/0f5b72_f8271a261344485f820790ffe5218edf.pdf
    • https://static.usrfiles.com/ugd/221f3a_6da89aa40e3d44e18de805fa4421022f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9698d9746ec44ffb9c18193521fbafa5.pdf
    • https://static.usrfiles.com/ugd/e2f197_cbf78315226d4777b29648d450f5668a.pdf
    • https://static.usrfiles.com/ugd/98d639_a4fc61c863224aaa9659d80663191d87.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/17912508070.pdf
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/renolufomakiladozi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000693b.bin
2619f28f0fb99e2c582dae6d64daec7a69f4b31539012d2bce0e485cfd362bb2
pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 4248 bytes
font_01_sfnt_off0000782f.bin
740be61c29cdadbe0944bdeb6ef2ff1a1941af93530e8271f4f6e39fae5c4429
pdf-font-stream PDF embedded font (sfnt) at offset 0x782F 4948 bytes
font_02_sfnt_off000088ef.bin
e389df2f1d884acd16b0ec04041f09d2f4f91da5d1026f7c543358f8f34d906d
pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 10984 bytes