Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e64c9dd58e8fc2d…

MALICIOUS

PDF

45.1 KB Created: 2020-08-30 20:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8073071efa0baa78a7056a8b64d59312 SHA-1: 86a6d2696bcd1aeff33c10b0c35dd674da48692a SHA-256: 8e64c9dd58e8fc2dc869f8cdd7b159ffcc83f90ea6d1887ce8651f807f4838be
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=the+western+heritage+volume+1+11th+edition+pdf', is the primary indicator of malicious intent. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of a malicious redirector strongly suggests a phishing or malware distribution campaign.

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/wix?keyword=the+western+heritage+volume+1+11th+edition+pdf
    • https://static.usrfiles.com/ugd/b8c837_d73749051f7d4100bd8489917850ba5c.pdf
    • https://static.usrfiles.com/ugd/c63dba_2e1400bb268347ac8bb6ec18d90428be.pdf
    • https://static.usrfiles.com/ugd/b8c837_99ad1b897190417794d4720556388221.pdf
    • https://static.usrfiles.com/ugd/516793_218a28477aa542b0b2aec8e3f5c01769.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9006dcd00db4a1ba164894ddcfa0059.pdf
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/vaximavonuvofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/bozeman_science_population_ecology_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/23149218649.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/60765298269.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/12613713734.pdf
    • https://cdn.shopify.com/s/files/1/0429/0274/9347/files/demography_and_vital_statistics_book.pdf
    • https://static.usrfiles.com/ugd/238140_b8c5d2e1a5aa460b88900077d88076ec.pdf
    • https://static.usrfiles.com/ugd/374ce0_04f82bb3c3754421b113a58d5e120be2.pdf
    • https://static.usrfiles.com/ugd/b8c837_e39f5220c022485ba0e63cdb5461b43d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f62a8d606c314b7dadde0fff054d4273.pdf
    • https://static.usrfiles.com/ugd/b8c837_84afb516428d45e69379c618e354cae9.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_off00007201.bin
7eca3cf551b1b0a9ba55a30c828390e0a080843b191a9684aee4d61946763af8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7201 5608 bytes
font_01_sfnt_off0000850a.bin
b0e003e5eb3f300274c303bdd38fa72090ea9421faea357cbfe2a85111acc845
pdf-font-stream PDF embedded font (sfnt) at offset 0x850A 9944 bytes