Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74ca1dbe1acd5b5…

MALICIOUS

PDF

44.5 KB Created: 2020-08-18 16:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b519ef55202d202ae0051435bb908b4e SHA-1: 55eeaa81cd315bca86507066d9e25eda660df005 SHA-256: d74ca1dbe1acd5b518da9a4422c4d36eaf03a90ecbfef87e9ff305ceba27d1cc
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Adobe Photoshop Touch Android' and URLs that are likely part of a lure to redirect users to malicious sites. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adobe+photoshop+touch+android, which is used to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=adobe+photoshop+touch+android
    • http://rufip.astrologervaranasi.com/uploads/1/3/1/1/131164250/veruguratajufe.pdf
    • http://boxeted.upvcwindowmachines.com/uploads/1/3/2/6/132681352/7141755.pdf
    • http://files.morgankendallart.com/uploads/1/3/0/8/130814706/2741143.pdf
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/rufebakev.pdf
    • https://cdn.shopify.com/s/files/1/0437/6644/8277/files/least_squares_fit_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0434/2297/4117/files/wopomarezabuwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/emotions_worksheets_for_preschoolers.pdf
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/pebiniwijoxiwilusurax.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/bolipawateronolop.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/cox_sierra_vista.pdf
    • https://cdn.shopify.com/s/files/1/0440/2148/1622/files/7022283979.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/lofanakil.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7933/files/vezaradurovuponenikuper.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/22146034649.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006112.bin
74486fa37dc65e9cc566c55a1e3d3d164425784a2136d836ac1652cd4f3880a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6112 5140 bytes
font_01_sfnt_off0000727a.bin
7502ba94722c6f9649567f2666e02e855a23428bb03de1f8eefcd9f1082fc08d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727A 10704 bytes
font_02_sfnt_off00009712.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9712 4324 bytes

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