Malicious PDF — malware analysis report

Static analysis result for SHA-256 895c71f8a356e0af…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 11:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee6cbd7b3d3cd62e1f4b5927e624660 SHA-1: fe7cbc30d311423ec96cf454eede38cc91f60f4d SHA-256: 895c71f8a356e0af487990f3fd3c18da095ec464b01e38b586b7ee9cf7ba5163
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=lich+king+hearthstone+warrior+guide', is designed to redirect users to malicious content. The document also contains a PDF link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0428/8266/2553/files/wetamiba.pdf'. The overall attack pattern suggests a lure to a malicious site disguised as a game guide.

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/pify?keyword=lich+king+hearthstone+warrior+guide
    • http://files.immaculataschool.org/uploads/1/3/1/4/131408465/lukatudos_rifuxojesopipa_moxinix_jenopave.pdf
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/wetamiba.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/kikevagajagaxon.pdf
    • https://cdn.shopify.com/s/files/1/0438/9958/4664/files/20944215237.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/53483516482.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/2314986881.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4340/files/ambient_display_not_working_android_10.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/the_wanted_songs.pdf
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/atomic_structure_inorganic_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0433/7162/6652/files/jaxikesugevusodedobijamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/69993788622.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/all_accounting_journal_entries.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_off00005c68.bin
8dc89e09de313081378d05d31682463acf4d1ac7663c22746766b02f29fdedf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C68 5264 bytes
font_01_sfnt_off00006e50.bin
898b045a66d245d96229f8c18409db0c51b4409fd8372c744b409905e6fd8d8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E50 10060 bytes

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