Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2a486f10cb06b1…

MALICIOUS

PDF

43.5 KB Created: 2020-08-15 13:31:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49cff4f25082a283856caad53508e777 SHA-1: da3aec004b96abba940901a0e1a2421a73cb83c9 SHA-256: 7d2a486f10cb06b1ec331dde7df49d97e6751e4243735a85632b718a1f33b65f
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'ccna 1 chapter 4 pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure.

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/wb?keyword=ccna%201%20chapter%204%20pdf
    • http://tetagido.stdavidscranbury.com/uploads/1/3/1/4/131406717/latopuv.pdf
    • http://rebugeje.edpeeples.com/uploads/1/3/1/0/131070420/jexitazuzakat-wewotelet-zazabawetawem-wofatat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/chocolatier_game_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/4438/8514/files/arabesque_piano.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/metokoxonofulujumil.pdf
    • https://cdn.shopify.com/s/files/1/0430/7776/3226/files/luxopejebizewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/24215164757.pdf
    • https://cdn.shopify.com/s/files/1/0447/3815/0549/files/plus_two_zoology_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/club_cadet_1042.pdf
    • https://cdn.shopify.com/s/files/1/0429/3171/6262/files/62981944343.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/17190500708.pdf
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/derivative_in_matlab.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_off00006dc6.bin
793e3098198ab46d671e2062c92320e50e985779c69529da3e04ea9a7951e33d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC6 5080 bytes
font_01_sfnt_off00007f03.bin
1e5c5db06ba4e3daf9d9389b2ca0e34448084fb3397bcdc250aea3345d2f7337
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F03 10076 bytes