Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e02cb5c4ee8a944…

MALICIOUS

PDF

66.2 KB Created: 2020-09-06 00:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ae0eac38eff519268f7a9e4cb17c8c4 SHA-1: 56846522b52e48d80269f130a4b9312897ed01b1 SHA-256: 0e02cb5c4ee8a94455b1c9f41e0187f500eccaa1f265c89121b9dcd6aac8210c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains a URL that appears to be part of the link farm. This suggests an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing.

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.club/wix?keyword=behaviorally+anchored+rating+scale+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0216/6428/files/85358823093.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/malidupilisenibomedetur.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/pamiragom.pdf
    • https://static.usrfiles.com/ugd/02ccf7_50158ae57148403da68dd3b3e5ba650f.pdf
    • https://static.usrfiles.com/ugd/d01287_d1e2ee2a0f694647bb1bd0490fb8b8ab.pdf
    • https://static.usrfiles.com/ugd/5b5da7_7dfc867da3424a98bcb1ae56f3c7ba6d.pdf
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/listen_8th_edition_kerman_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/bobs_burgers_pilot_script.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/shawty_lo_units_in_the_city_zip.pdf
    • https://static.usrfiles.com/ugd/9f69bd_018ee48b77d449038349ce0c8c503b00.pdf
    • https://static.usrfiles.com/ugd/ef7486_90d0a10123554b8fb6bf25b73c25ffa6.pdf
    • https://static.usrfiles.com/ugd/145364_a9c8dffa6f6f425aa7e903fbb372113d.pdf
    • https://static.usrfiles.com/ugd/80fd5d_e43521c415c841f98a1393047510a2ec.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_off0000b9d3.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D3 2828 bytes
font_01_sfnt_off0000c3ce.bin
7815396db04e55483e4a7fa0e88940b9c3ec07b63338d4e11480d4739854788d
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CE 5700 bytes
font_02_sfnt_off0000d715.bin
ccc63e440fceddf11ece1d5237defa560ba55d9d7da109f221878ad0f1831586
pdf-font-stream PDF embedded font (sfnt) at offset 0xD715 9932 bytes