Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1a68efedb5b47c…

MALICIOUS

PDF

61.9 KB Created: 2020-08-08 22:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b6934d30af54d17cbb841fe0d621703 SHA-1: 4dac846b0e4330e25fd994ae5a31e884b3265132 SHA-256: cd1a68efedb5b47c86cb0752f42b3ef5d3464f20541b3e16bb1d19015b686299
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, including one pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains a reconstructed URL that likely serves as the initial lure. The presence of a link farm and urgency language suggests a phishing or scam attempt to drive traffic to malicious infrastructure.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=hemostasis+and+blood+coagulation+pdf
    • http://files.endeavoursporting.com.au/uploads/1/3/2/3/132303117/d6ff8e2297.pdf
    • http://files.mickylynnexecutivetouch.com/uploads/1/3/2/7/132740250/5758787.pdf
    • http://files.bribelle.com/uploads/1/3/1/4/131482822/4078812.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/rexusesimopegetoxobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/zulasututifaso.pdf
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/arm_microcontrollers_programming_for_embedded_systems.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/asamardhuni_jeeva_yatra_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/4768/8091/files/grade_4_math_worksheets_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/96893811797.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pawatofamilafal.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/kufewojififovenijiwegix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/3100343313.pdf
    • https://cdn.shopify.com/s/files/1/0430/5498/9466/files/nirvana_discography_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/60924510123.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_off0000a8f8.bin
2db9c5945c28d7787e36d36a3e2c9d96a9882ce44779e32c0e4896190ba5db6a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F8 5360 bytes
font_01_sfnt_off0000bb1c.bin
62a107ae8254ef5f87853bbfd80ef57ddc325d44b9662f1d7bd5462791ad58f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB1C 9680 bytes
font_02_sfnt_off0000dc18.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC18 4324 bytes