Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba0e113d922da75…

MALICIOUS

PDF

35.1 KB Created: 2020-08-09 04:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70fa8cbffce992062346c93478d99197 SHA-1: 19192118f3fb5908d03e09f05e2c0818708491b5 SHA-256: bba0e113d922da75dff4379d2b5258fc76b1de4bdfa940f2eb77ddb012f13d2a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to academic subjects, likely used as a lure. No scripts were extracted from this sample.

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=applied+finite+mathematics+pdf
    • http://files.irwinpta.org/uploads/1/3/0/9/130969089/parus_tigalutirexig.pdf
    • http://gifapigu.dare-h2020.org/uploads/1/3/1/6/131606289/fisavaxaxupez-xaruj-bipemuwogi-subefimawajujo.pdf
    • http://nusixafis.simplylawns.us/uploads/1/3/0/8/130874474/tewokusamojemagal.pdf
    • http://files.sheppardinternational.net/uploads/1/3/1/3/131380008/wevexada_mutezolojow.pdf
    • http://files.stressfreefurniture.co.nz/uploads/1/3/2/3/132303077/wewiva-pizekopabireg.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/16183871931.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/34523605253.pdf
    • https://cdn.shopify.com/s/files/1/0434/2661/1356/files/mpmsu_bsc_nursing_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/linear_and_binary_search_in_data_structure_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/65684630293.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/tatiber.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/9086663160.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/pengertian_populasi_dalam_biologi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/fogodinim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/clawhammer_banjo_for_the_complete_ignoramus.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/80109586179.pdf
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/3d_movies_download.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_off00004caa.bin
7e2281de8601af3a102d12245339257afe0316e9613b05845968a918d71c4daf
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAA 5288 bytes
font_01_sfnt_off00005e88.bin
3c4b11cc32e3577779085d9450dd2eae912e9335ba54a2b75c1474ba258da8b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 9740 bytes