Malicious PDF — malware analysis report

Static analysis result for SHA-256 d389d0aad2cdb36a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-11 08:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c8f043651be4bafe33a649cf630ece SHA-1: bdda2c6f23a90f1c22945ec99578bdcdc2bcf6ca SHA-256: d389d0aad2cdb36abc8e85cb23d0137a601d0530cceef7e51fc46b7809feac98
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.cc/wb?keyword=ak%20jain%20physiology%20pdf%20for%20mbbs, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an intent to drive traffic to potentially malicious content. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a strategy to appear as a legitimate resource while funneling users through the malicious redirector.

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/wb?keyword=ak%20jain%20physiology%20pdf%20for%20mbbs
    • http://xetivuvo.ahhs2020.com/uploads/1/3/0/8/130814328/6924901.pdf
    • http://files.jaynardiscounts.com/uploads/1/3/2/7/132712206/bebeve_vixaraxofireb_bebulezoduxakuj_temik.pdf
    • http://files.walcoleather.com/uploads/1/3/2/7/132740350/xefisedejuxigij.pdf
    • http://files.obrienclan.com/uploads/1/3/1/6/131606331/gedinodu-sajufomesej-wegudisurej-kaletibaluz.pdf
    • http://files.littlescreenplay.com/uploads/1/3/1/3/131383791/4693664.pdf
    • https://cdn.shopify.com/s/files/1/0446/2454/3907/files/1_minute_10_second_timer.pdf
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/glossaire_anglais_des_affaires.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/bowoganupebebobiju.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/gerimagejutuxawifunilo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/27068215334.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/67075054733.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/25498063105.pdf
    • https://cdn.shopify.com/s/files/1/0440/4707/3445/files/what_is_broadcast_domain_and_collision_domain_in_networking.pdf
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/bowigewowafaliparukeferi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/thesis_about_teaching_strategies_in_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5055/files/sekuvexorilape.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004784.bin
22331c0d53c9404ddb7ba4971b4662229385775b28a24af61266fcfcbde122d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x4784 5828 bytes
font_01_sfnt_off00005b30.bin
dc19601b3ba65a61e1469ffbd1b5b14cedfaf9dc2fc8de4fc507027a8cb692bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B30 9520 bytes
font_02_sfnt_off00007c08.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C08 16164 bytes