Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b25828601cd2f3d…

MALICIOUS

PDF

43.8 KB Created: 2020-08-16 19:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baf3d40899ceded0508849e14b8f4f18 SHA-1: 0a29dbe7504427c216f32b83d316a28c98080289 SHA-256: 7b25828601cd2f3d19a4fc42b9f0c140bf6fcf8e9d03415b6d240f38ef241a8f
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body contains a call-to-action phrase, suggesting a lure to click the malicious link, which likely leads to further malicious content or malware download.

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=install+android+adb+ubuntu+16.+04
    • http://files.thesilentbeauty.net/uploads/1/3/1/4/131436991/dadew.pdf
    • http://pedoxogo.theofficialbobbycaldwellsite.com/uploads/1/3/1/3/131380429/8300921.pdf
    • http://files.janecaldwell.com/uploads/1/3/1/6/131637147/1422332.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6064/files/nujarinusemifer.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/github_push_to_master.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/98708243058.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/ccna_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/dutejev.pdf
    • https://cdn.shopify.com/s/files/1/0448/4818/5501/files/61967327305.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/47283574517.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/westminster_shorter_catechism_modern_english.pdf
    • https://cdn.shopify.com/s/files/1/0438/1304/4386/files/audit_bureau_of_circulation_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/xuvuzivo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/equipment_rental_agreement_template_south_africa.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_off00006530.bin
c1a42b864e2a76cdf49275edfeed7251eccc7d7b339ab1abd09b7123f3c36b80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6530 5364 bytes
font_01_sfnt_off00007777.bin
d6f049574b79a9809d3b5d0adc18fa9ef7a0489129b3989cd3c3b64a83085142		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 13644 bytes

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