Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c882a4b8a0edb54…

MALICIOUS

PDF

172.8 KB Created: 2020-08-02 16:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6bada264739fd9aa3db7e96eb36a541 SHA-1: 6a25716deee9ca0aad7e2c0b3e4fc1032fa61352 SHA-256: 8c882a4b8a0edb545df01e6cbde8f9a13ea0a8ce3cef64a7ccad2b19556a24ef
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a malicious link disguised as a Diablo 2 resolution mod download. The link redirects to a known malicious infrastructure, ttraff.com, which is likely used to host further malicious content or phishing pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.com/pify?keyword=diablo+2+resolution+mod+1.+14d
    • http://files.mzocoill.com/uploads/1/3/1/4/131407227/pavewegatevi.pdf
    • http://files.sportmomsandmore.com/uploads/1/3/1/3/131383462/3764971.pdf
    • http://files.nourkabbara.com/uploads/1/3/1/3/131379718/wonuzora-walirerej-nurotomijudupik-xijemegir.pdf
    • http://files.breadbyerika.com/uploads/1/3/1/4/131437683/vedadagud.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/81377547980.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2119/files/98267903557.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/92050231649.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0439/6879/0686/files/zilomiwewamajog.pdf
    • https://cdn.shopify.com/s/files/1/0430/0839/3369/files/73021012071.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/6981/files/zebadidofirazetavu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/56837802823.pdf
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/amy_whitehouse_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/fokumiwekunobevipegutob.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/nejaxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6891/5863/files/zodigegesovibizud.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025428.bin
30310b7eb1592391d1cba1ec3027d790f13c13014dcfe67e317f4d0e3f01a64a
pdf-font-stream PDF embedded font (sfnt) at offset 0x25428 5296 bytes
font_01_sfnt_off00026611.bin
635dafc69ec56cedef6a768289b5c71675f6ee10721c9d2343874ca3ef75c02e
pdf-font-stream PDF embedded font (sfnt) at offset 0x26611 15808 bytes
font_02_sfnt_off00029712.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x29712 4324 bytes