Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f00d9f3858474c…

MALICIOUS

PDF

36.1 KB Created: 2020-08-15 04:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e4717290e65efd3ea79e3864cf0c13b SHA-1: fe4d88b0db6cdb40cb337545d87fa5827e6fb6a3 SHA-256: d3f00d9f3858474c41567b9b12ed1e5a8204e2c0324d7dcc4bdd5324c1c019d5
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 links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious URL, 'https://ttraff.cc/pify?keyword=cascade+lake+idaho+ice+fishing+report', is flagged as a malicious redirector. The document body is heavily obfuscated but contains the same URL and other PDF links, suggesting a coordinated effort to distribute content through numerous external links, potentially for SEO manipulation or to host further malicious payloads.

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=cascade+lake+idaho+ice+fishing+report
    • http://files.bill-tourguide.com/uploads/1/3/1/4/131437561/1701996.pdf
    • http://files.blazingbronzesetters.com/uploads/1/3/0/7/130739652/dazuredivuduko_joxiwukafa.pdf
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/robinair_ac_machine_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/36938660517.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/95952583451.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/32798666132.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/moxakezedowonoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9788/2773/files/kagazoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/beauveria_bassiana_mode_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/adobe_acrobat_create_toolbar_acroiefavclient._dll.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3576/files/bisalofigoponivabivefinib.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7207/files/nifowakimuzof.pdf
    • https://cdn.shopify.com/s/files/1/0434/2670/9665/files/islr_statistical_learning.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/chemistry_brown_12th_edition.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_off00004f0d.bin
bb9b3567358de33c201aac9be8222dbf93c289e82000adaebde052226a849341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F0D 5388 bytes
font_01_sfnt_off0000614e.bin
a79e658b80570fd524157f46b5622836889a3eb1d08b998d3a9bf4c4afa71157		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614E 10040 bytes

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