Malicious PDF — malware analysis report

Static analysis result for SHA-256 36721e20df986279…

MALICIOUS

PDF

46.7 KB Created: 2020-08-23 07:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f8548913fd752b0553992ff0fa58043 SHA-1: 165ac3249c34bc40d9c338f98ea2adb4d2300a50 SHA-256: 36721e20df9862794fcc0bae5684d5d8994ce43bcffbc148fd50a5e9bc3964ab
188 Risk Score

Malware Insights

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

The PDF contains a lure related to financial transactions, specifically an 'Aviva drawdown application form', and includes a call-to-action button. It also contains a mass external PDF link farm, with one link pointing to a known malicious redirector. The primary malicious link is https://ttraff.cc/pify?keyword=aviva+drawdown+application+form, which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily corrupted, but the presence of the malicious redirector and the link farm strongly suggest a phishing or credential harvesting attempt.

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=aviva+drawdown+application+form
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdf
    • http://files.susandieterlen.com/uploads/1/3/0/7/130739883/ed099.pdf
    • http://files.moonlightgrahammusic.com/uploads/1/3/1/6/131637797/kofazegesig-sakapagogubad-pulagurigoriz.pdf
    • https://cdn.shopify.com/s/files/1/0457/8620/2278/files/xumimarimorokusuzizufabo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/graphs_in_access_reports.pdf
    • https://cdn.shopify.com/s/files/1/0445/3348/1636/files/post_office_bank_account_opening_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7833/files/carl_jung_map_of_the_soul_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/xivikiwiravobivevapekifa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdf
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/69363884647.pdf
    • https://cdn.shopify.com/s/files/1/0433/3830/1590/files/padikidakarid.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/fisusoder.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/xiramovofuwimaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6065/files/code_review_spreadsheet_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/deathstroke_sword_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/spring_boot_tutorial_tutorialspoint.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_off00006c4d.bin
a7e80fec0c5a582d62dc9288bbed15fa5d576d06d6cc8c1ec5bf22a18e0555ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 4932 bytes
font_01_sfnt_off00007d02.bin
4fb90a35b03026de3c62856ae97a8a9b80e4b5ed683b26226721e1c7935e1b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 10300 bytes
font_02_sfnt_off00009fd6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD6 4324 bytes

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