Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc53f1381105665e…

MALICIOUS

PDF

45.8 KB Created: 2020-08-24 00:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 983868c6b352181a4edc20f44beecc1e SHA-1: 914f1333e63894a5622372745ade0833feddc0b9 SHA-256: bc53f1381105665ea9d81a713130bdd20bdfd0ee52ba967fb62a76344e8db4d4
150 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, with numerous embedded links to external PDF files hosted on various domains, including Shopify. This suggests a campaign focused on redirecting users to potentially malicious sites or engaging in SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=alias+grace+novel+pdf
    • http://files.amanapopcornandicecream.com/uploads/1/3/1/3/131380337/poluferasitafame.pdf
    • http://files.vk5pas.com/uploads/1/3/2/7/132710786/4be5233cc.pdf
    • http://files.colorandlightpaintingworkshop.com/uploads/1/3/1/4/131408798/535655.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/76654808450.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/77955092440.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/seluzorurifame.pdf
    • https://cdn.shopify.com/s/files/1/0430/4342/2359/files/4084685920.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/ccna_past_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/4481/4500/files/iams_puppy_food_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/devira_tamil_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/2782/2752/files/intravenous_urography_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sagomowaroperovi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1805/files/journey_of_a_water_droplet_worksheet.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_off0000758a.bin
7d049d027dd4ee53a2f783eb99d38b2d12c1424b157ba7e4524a4d604daa8369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758A 5372 bytes
font_01_sfnt_off000087dd.bin
9b37586aeea2b4f9651cc9977508a07148d5f29668b7d91acc3ab1cf679dca17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 10288 bytes

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