Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d682914e3c3f322…

MALICIOUS

PDF

46.4 KB Created: 2020-08-19 08:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c58fee72c6677f62df74db338bff9d1c SHA-1: 34800041523c70175376eca21fc7cf0bd3789ecd SHA-256: 2d682914e3c3f322fee6ae25cc06046e61c9588b13cc94f8c061d1fbfeef3268
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, some of which are benign but others are unknown. The document body, though heavily obfuscated, contains the target URL and a call-to-action phrase, reinforcing the lure. The primary attack pattern involves tricking the user into clicking a link that leads to malicious infrastructure.

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=nacte+guide+book+2018%252F+19+pdf
    • http://files.stowinfo.co.uk/uploads/1/3/2/3/132302768/7283bd20a4.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/one_year_catholic_bible_reading_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/tojabefesopugaferapuxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7617/3472/files/ahmedabad_city_information_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7249/files/hellfire_hunchback_of_notre_dame_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4700/files/jugeraxutixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/39472875566.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/physically_based_rendering_encyclopedia.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/benevolent_fund_form_kpk.pdf
    • https://cdn.shopify.com/s/files/1/0438/0642/5248/files/24323310131.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8019/files/windows_10_3d_objects_folder.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/recommendation_letter_for_employee_from_manager.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_off00006d2e.bin
41a3d3651c0dd11aec896ebbdc2744af8913bb86dec5a678b86863eca0b57163		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2E 5904 bytes
font_01_sfnt_off00008160.bin
ca286d170b6be9dc0dc2625ad3e714bf2be3038fc6dcaf7eab16bebda5c6acf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 14188 bytes

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