Malicious PDF — malware analysis report

Static analysis result for SHA-256 216ce1fa414ca5ad…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 22:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa620c95c7dcd13c6551213b297122b9 SHA-1: 1930f1f70c735242cb876bde61b4a772df574064 SHA-256: 216ce1fa414ca5adba29a13d9b75327aa223947cf10932bcbb32234ca726f2d7
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a password recovery query, and a large number of SEO-optimized links pointing to benign Shopify domains. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely provides password instructions for an archive, a common tactic to bypass gateway security. The primary malicious URL is https://ttraff.com/wb?keyword=can%20you%20unprotect%20a%20worksheet%20without%20the%20password, which is likely used to download a second-stage payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wb?keyword=can%20you%20unprotect%20a%20worksheet%20without%20the%20password
    • http://bokagape.woodbridgecommunitychoir.org/uploads/1/3/1/0/131070450/703e11.pdf
    • http://files.parksideucc.com/uploads/1/3/1/6/131637553/1779048.pdf
    • http://files.vesselsofmercy.net/uploads/1/3/1/3/131379118/tofufirijuk.pdf
    • http://files.odonnellpsychotherapy.com/uploads/1/3/0/8/130813765/savitolezewebu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/anemia_hemolitik_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5579/files/types_of_validity_in_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7525/files/28713003481.pdf
    • https://cdn.shopify.com/s/files/1/0435/6256/5781/files/a_restriction_appropriation_of_retained_earnings.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/17906842390.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/furixofusanalinibisadan.pdf
    • https://cdn.shopify.com/s/files/1/0433/1683/8558/files/janerapolog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7858/files/tijuzerakoko.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/74029838821.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/69023363468.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/20562883213.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_off000072fb.bin
a7a4b56c3e1997327db1b71f49b8ec6ec58772af254c23894ca64ed7bfb852f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x72FB 5292 bytes
font_01_sfnt_off00008512.bin
5683df39e70618924d9365094dafacf290e1f4c681c4998ff56cf6760e6a24c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8512 10364 bytes