Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed01feae6c071fb…

MALICIOUS

PDF

48.0 KB Created: 2020-08-06 14:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5187ee71c09b6912b7bbcfc35b3e64b SHA-1: c15ae769298f679c4f09db601fa046b9aa149154 SHA-256: 0ed01feae6c071fbde6c35238c3d7a28dda4778b2281bef9fc56a89bbf9c16bf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.com/pify?keyword=k2020+rfid+access+control+manual+pdf', is identified as a malicious redirector. The ML classifier also flagged this PDF as malicious with high confidence. The presence of numerous links suggests an attempt to distribute malicious content or redirect users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=k2020+rfid+access+control+manual+pdf
    • http://files.leakedesigns.com/uploads/1/3/1/6/131606346/882182.pdf
    • http://files.dywborders.co.uk/uploads/1/3/0/8/130873822/jopomanawo-loxutuwopek-xelabulemo-keveguwezatuga.pdf
    • http://files.crazyabtcupcakessd.com/uploads/1/3/1/3/131379724/beleduwezezib-lomusikexoke.pdf
    • http://files.lisafranek.com/uploads/1/3/2/6/132696030/xodulelasifi.pdf
    • http://regaves.longfordhospicehomecare.com/uploads/1/3/1/4/131483200/fogabovi_donapiwejutumo_fuvimewatuxaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/morazaradil.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/bufudexiregolegit.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/44346104550.pdf
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/fifinifetizevu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4394/6649/files/46518999949.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/somewhere_over_the_rainbow_uke_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/lixatisekabu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/laura_marling_what_he_wrote.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/6394955376.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/zewopalo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7178/9470/files/49438403898.pdf
    • https://cdn.shopify.com/s/files/1/0444/6637/2775/files/tanzania_visa_on_arrival_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e8f.bin
42acd59a08a7c1faf6a7a40d4366089c1c0c1f7b16b481b7aefd34b758e34343		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8F 4312 bytes
font_01_sfnt_off00006d8d.bin
bdb4a8b895ecd75983049e5f9aebee4b414c09cf2ccafd6cdb58e1b74027f894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8D 5544 bytes
font_02_sfnt_off00008058.bin
7e69270d06b5c893ebfb2bdb99187ef6cbb87a7d7eb89b63502ca53ca65da1e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8058 16524 bytes

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