Malicious PDF — malware analysis report

Static analysis result for SHA-256 df50366dbc8c1723…

MALICIOUS

PDF

35.2 KB Created: 2020-09-02 02:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 531b0a956a76be4648f0d693296b0292 SHA-1: ac4f810a7d2de51dba0497ec0b329cf02c455d6e SHA-256: df50366dbc8c1723964c8631f334db2fca1703834418dbe4f2fae0ee8887d8e0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF link to known malicious redirector infrastructure at 'https://ttraff.cc/wix?keyword=bessacarr+496+owners+manual'. The document body, though heavily obfuscated, contains text referencing 'Bessacarr 496 owners manual', suggesting a lure to trick users into clicking the malicious link. 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=bessacarr+496+owners+manual
    • https://cdn.shopify.com/s/files/1/0427/6187/9719/files/logajigiro.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3585/files/56974922978.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/10019928470.pdf
    • https://static.usrfiles.com/ugd/6846fe_abae7d08f7da46a38a4fd495033ee987.pdf
    • https://static.usrfiles.com/ugd/4c3d6a_d12ab11668b449bc91330f65ef33443b.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8286/files/vofixusafifa.pdf
    • https://cdn.shopify.com/s/files/1/0463/0980/2146/files/91473712539.pdf
    • https://cdn.shopify.com/s/files/1/0429/5580/0732/files/kukopesimajivelar.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/31643402666.pdf
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/82141371346.pdf
    • https://cdn.shopify.com/s/files/1/0435/9825/0141/files/sabojojamili.pdf
    • https://cdn.shopify.com/s/files/1/0443/1210/1020/files/playing_card_games_rules.pdf
    • https://cdn.shopify.com/s/files/1/0433/9712/0151/files/mebivixafovemalebif.pdf
    • https://cdn.shopify.com/s/files/1/0454/1834/8712/files/answer_sheet_toeic_test.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_off00004c72.bin
bdd43b6822b1f980a2eea920d3aaed1031e6f52a00678cbd97400074c3d38323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C72 5484 bytes
font_01_sfnt_off00005f16.bin
14cd2d91842e4f01cd67d52b01cc30c2dd2ac727743228cb0d0c1483933b0a5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F16 9628 bytes

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