Malicious PDF — malware analysis report

Static analysis result for SHA-256 51c9e36023a3d779…

MALICIOUS

PDF

35.6 KB Created: 2020-08-25 09:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b86ae1fad277edff68e54b9e4614365a SHA-1: 505392f4edcdd0f084ea22f695b414730f141e6e SHA-256: 51c9e36023a3d779ba107316b318934dc9cf9c93898feba436df3a781e64f5ca
128 Risk Score

Malware Insights

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

The PDF contains a deceptive link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL and appears to be a lure for educational content. The PDF_SEO_LINK_FARM heuristic further suggests a pattern of hosting numerous links, likely for SEO manipulation or to distribute malicious content. The presence of a visual download button lure reinforces the deceptive nature of the document.

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.cc/pify?keyword=adjective+preposition+gerund+exercises+pdf
    • http://jazivaw.gswcfl623.org/uploads/1/3/1/3/131383775/nisotabolaxat_gomites_jojumug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/65552215791.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/velemadedenirogonoba.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/gesugasobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/bohrsches_atommodell_aufgaben_lsungen.pdf
    • https://cdn.shopify.com/s/files/1/0433/9059/9319/files/30322527259.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/js_generate_random_string.pdf
    • https://cdn.shopify.com/s/files/1/0437/8525/7112/files/62988214888.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/the_canterbury_tales_translated_by_nevill_coghill.pdf
    • https://cdn.shopify.com/s/files/1/0431/2753/7828/files/rosaranujepodofigewigusa.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_off00004e24.bin
7da019e70354e945a257926a15c0703ac61718617518b17df5f5390dbe9d58f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E24 5276 bytes
font_01_sfnt_off00006039.bin
5e89aa1ff87908f17e5a1e2c359bf82363f30d82cd9b7ed89d0b71ea3323e429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6039 9888 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.