Malicious PDF — malware analysis report

Static analysis result for SHA-256 8caa8003acd71a08…

MALICIOUS

PDF

43.2 KB Created: 2020-08-17 13:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e0692a795e7ca42aa22a93ae555b0b3 SHA-1: 2b501331ef2bf8c568beebf3f96d50117836cabd SHA-256: 8caa8003acd71a08530044960b44e9164ed7f9616c9e41afc525059fecf06869
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate this is a link farm designed to manipulate search engine results or lead users to malicious content. The document body, though heavily corrupted, contains references to the primary malicious URL and several other PDF files hosted on various domains, suggesting a broad distribution or redirection strategy.

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.ru/pify?keyword=warmane+icecrown+leveling+guide+horde
    • http://files.ukcpioneerdays.com/uploads/1/3/0/8/130814298/fubazirok.pdf
    • http://files.ghesslaumagrady.com/uploads/1/3/1/8/131857920/4603701.pdf
    • http://files.arkansaspropertymaintenance.com/uploads/1/3/1/4/131408581/3559133.pdf
    • http://latizit.solomomma.com/uploads/1/3/1/6/131607254/botove.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/activemelody_jam_tracks.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/basetiror.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/chemical_bonding_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0449/4819/3439/files/miwukat.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/rumozigiwomozutix.pdf
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/dominando_as_aberturas_de_xadrez_john_watson.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/online_to_word_converter_50_pages.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/mizijerulosugoduju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8412/files/nipukuwebipob.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/adopter_categories.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_off000069b2.bin
506db66e9c7fdb6b63fd326eb1f42cc93aa95721ebb33d19eea91141403b1b6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69B2 5340 bytes
font_01_sfnt_off00007bc1.bin
0212a266bf52fc58331daa786c912e29d8f65d4a16930488ee1e91af32cfa0e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC1 10628 bytes

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