Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a5a99a3c29f7cf8…

MALICIOUS

PDF

41.3 KB Created: 2020-09-02 19:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a09c40b9d503698502c3153448fed3e SHA-1: d6c546b1c0cf872660866799fa01979842082e3c SHA-256: 4a5a99a3c29f7cf8db3006e59ffae61bc8be8ee0947c254ce06663c49b64375c
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Alkyl halide mcq pdf' and the malicious URL 'https://ttraff.cc/wix?keyword=alkyl+halide+mcq+pdf', suggesting a lure to academic content that redirects to malicious infrastructure. No scripts were extracted from this sample.

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.cc/wix?keyword=alkyl+halide+mcq+pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/1970_chevy_blazer.pdf
    • https://cdn.shopify.com/s/files/1/0434/5449/6935/files/34502231613.pdf
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/classroom_of_the_elite_pastebin.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/99128479224.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/above_top_secret_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/kuxotujizufirijefufozegat.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/99164259813.pdf
    • https://cdn.shopify.com/s/files/1/0431/8773/2644/files/melugevosemato.pdf
    • https://static.usrfiles.com/ugd/01bc73_11176bf2c53942a3bfa9a5e080668546.pdf
    • https://static.usrfiles.com/ugd/7ff653_2abe1934944345b6813dc6df15e63f01.pdf
    • https://static.usrfiles.com/ugd/e948c1_bdcf33be91a64b2c89efeaa4d107e093.pdf
    • https://static.usrfiles.com/ugd/c1c462_d6d7e16c7f8142ad8dfd94cc64db6ad0.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ad.bin
594b8d527479a63b071ac82bedb01bd57dd6999b08c57a51278cec004f97ea0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 5400 bytes
font_01_sfnt_off000073f6.bin
022aab252ff1db59d16484730e3d291bd4cfb9ba7726830235f41c391b84bc19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 10960 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.