Malicious PDF — malware analysis report

Static analysis result for SHA-256 22020b47206b0876…

MALICIOUS

PDF

45.8 KB Created: 2020-08-30 07:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a589041eb0f57521e297ae0c8841a1d9 SHA-1: 139b388619620d04705efcaa45f71ff4bdebc942 SHA-256: 22020b47206b0876eac472d65bd151f4faaffdda1a924eacb3ee297411e7be94
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to 'Popular Science' magazine. The presence of numerous external PDF links, as flagged by PDF_SEO_LINK_FARM, further indicates a malicious intent to drive traffic to potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.com/wix?keyword=popular+science+august+1931+page+23
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/31371743324.pdf
    • https://cdn.shopify.com/s/files/1/0450/3132/5846/files/81225571046.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/migomewejo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4786/1923/files/dotupeduzujurebasewodetem.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/apprendre_l_italien_facilement.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/royal_caribbean_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/serial_song_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/dikukoxomiwamebufanote.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/34860776837.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/mikimi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/lomebul.pdf
    • https://cdn.shopify.com/s/files/1/0431/3805/6354/files/vexopojemusinasifetesigix.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2240/files/norufenunamogelotimezef.pdf
    • https://books.google.com/books?id=BCgDAAAAMBAJ&pg=PA23&lpg=PA75&dq=1931+augu
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://books.google.com/books?id=BCgDAAAAMBAJ&pg=PA23&lpg=PA75&dq=1931+augu
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f9.bin
12440a9ece06831a01694aabb71c1a36229af86daae6723cc9d23406804de874
pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 5488 bytes
font_01_sfnt_off000078aa.bin
bc5bf2464bf8ffa29c9b53ff298cdddcb8e050dbd85984162623076ef9a1f6af
pdf-font-stream PDF embedded font (sfnt) at offset 0x78AA 10312 bytes
font_02_sfnt_off00009bb1.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB1 4324 bytes