Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7aad15f34ec111…

MALICIOUS

PDF

41.1 KB Created: 2020-08-15 23:36:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 735ab8cc74d066ee98d792f5714df640 SHA-1: 09aa61ee3a52174c4ce4f863739bd96df32a656a SHA-256: 1d7aad15f34ec11186b9fcbdf6d5437399a2404e473c9ce697d410854bc22409
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=shopaholic%20series%20books%20pdf'. This URL is likely part of a phishing or scam campaign, attempting to trick users into believing they are downloading a book. The document also contains a large number of embedded links, many pointing to Shopify, which is flagged as a PDF link farm. No scripts were extracted from this sample.

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.ru/wb?keyword=shopaholic%20series%20books%20pdf
    • http://files.cancercure-fund.com/uploads/1/3/0/8/130874398/towonopokejajisoran.pdf
    • http://files.belangerbagels.com/uploads/1/3/1/4/131453060/5cc655b3f.pdf
    • http://files.mrsdsmithsthirdgrade.com/uploads/1/3/2/7/132710679/kumipor_vazasaxepu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/6730165022.pdf
    • https://cdn.shopify.com/s/files/1/0440/8265/9493/files/28439303093.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1357/files/23231748488.pdf
    • https://cdn.shopify.com/s/files/1/0434/2965/8790/files/buildroot_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/ielts_academic_writing_skills.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8919/files/xajupumabekenomudifelagut.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/leragezowag.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/44560381844.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/koxokiverepakegemezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/college_board_sat_practice_test_8.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/96334195657.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_off00005da1.bin
4dfb9c39dd24c4a3ef8a943d7e7ccd027ce83b378e32f71db46986e74ff6dfbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA1 5548 bytes
font_01_sfnt_off0000706c.bin
269e65e3dff627c728fb0c7f24150ab4b6942ad18ac70e20116ae94205a78a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706C 12308 bytes

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