Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b4307b9bfa0c15…

MALICIOUS

PDF

41.5 KB Created: 2020-08-20 18:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d7d8e290fbb80c4cb9999ac2876fb51 SHA-1: f9e56fd035564f842173268451867998cc80a44b SHA-256: 95b4307b9bfa0c15872f74aebc9007e1ee0f0042d42809bf9e36dd3c95cdebb3
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the embedded links, https://ttraff.cc/pify?keyword=us+fda+drug+labeling+guidelines, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Us fda drug labeling guidelines', 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/pify?keyword=us+fda+drug+labeling+guidelines
    • http://voxoru.princetonshowjumping.com/uploads/1/3/0/7/130740080/1978206.pdf
    • http://files.esthersgardenofhealing.com/uploads/1/3/2/7/132711947/1838b99.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
    • https://cdn.shopify.com/s/files/1/0445/6952/6436/files/kkk_and_the_kartilya_ng_katipunan.pdf
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/causative_have_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/serolibalozazizuropujiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7234/8579/files/4479000158.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/pgcps_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/8807202351.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/65059185397.pdf
    • https://cdn.shopify.com/s/files/1/0451/0456/2328/files/69816243669.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/bofikejimar.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_off0000650b.bin
0190f6a5965365df148b3d82ee3b44664f00b530c8f2998bb5edfcb38a40384c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650B 5208 bytes
font_01_sfnt_off000076c4.bin
691c35250c30cd5527616183350f344f54fbd4cbfd44b317e37ca2ea65dceb7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 10236 bytes

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