Malicious PDF — malware analysis report

Static analysis result for SHA-256 385379dca733d95b…

MALICIOUS

PDF

52.0 KB Created: 2020-08-15 04:59:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b54de4d98858a704af9ba10472171d9 SHA-1: 50c0ff98441f30e3b5f5414208a8e2887dfbfcf9 SHA-256: 385379dca733d95becf52848a76b3caeb084339ddf0257d30cfd4e5b1bd3bc36
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are hosted on Shopify, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used in conjunction with the lure 'bup.edu.bd admit card'. This indicates a phishing attempt to redirect users to malicious content.

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.cc/pify?keyword=bup.+edu.+bd+admit+card
    • http://files.joyfulnoisepreschoolsandy.com/uploads/1/3/0/8/130813768/595cf7d.pdf
    • http://files.circle-m-consulting-llc.com/uploads/1/3/2/7/132740293/8bbacf1.pdf
    • http://files.thissiteisunderconstruction.org/uploads/1/3/2/6/132682542/besozig_binuvidudenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/79863500526.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/bepirozuxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9365/files/46928742688.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/rasiwafuzolenekefuwitiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65939759823.pdf
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/15758506212.pdf
    • https://cdn.shopify.com/s/files/1/0434/4718/9670/files/jiripage.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/dapuxatixibozovugibu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006163.bin
f52b5794be26579afe9d980bc5e9600b88ca43c5120e47202fb52c763a69f492		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5232 bytes
font_01_sfnt_off0000730b.bin
be9b397609a1915b463beacf039ab2bda7d302b4c70d30c2cbb5862243c9fd30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730B 7344 bytes
font_02_sfnt_off00008a19.bin
f456375d4c9684e6b2918be1047399632256933fc59216e5dc084d022ccad04b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A19 10288 bytes
font_03_sfnt_off0000ad86.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD86 16204 bytes

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