Malicious PDF — malware analysis report

Static analysis result for SHA-256 808d43bd43f2eb86…

MALICIOUS

PDF

49.0 KB Created: 2020-08-13 23:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eac74457b73014eb46a845f8c29de799 SHA-1: 9d3e54ae0bf55c28c96f171ce33b5a3850733dca SHA-256: 808d43bd43f2eb8617aba38f3e1b279cbe34a55b28b76d8a2fcc63b37a351ed0
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic identified a PDF link farm hosted on 'cdn.shopify.com', containing 16 external PDF links. The document body, though heavily obfuscated, contains the same redirector URL. These findings indicate a clear intent to lure users to malicious sites, likely for phishing or to download further malware.

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/wb?keyword=leukoaraiosis%20adalah%20pdf
    • http://newuzupu.nataliedegrand.com/uploads/1/3/1/3/131381521/00986dbb156.pdf
    • http://files.biddislifestyleweddings.com/uploads/1/3/1/4/131437937/timuwabewosiv.pdf
    • http://files.kaitlinwilliams.com/uploads/1/3/1/3/131384442/5312888.pdf
    • http://jirafu.moliereexpressions.com/uploads/1/3/1/4/131437252/zaviwaw-letodunu-lixaxawunilebiv-zobuxajobuwemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2904/files/82262708533.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/48089484673.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/piregufevir.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/23651267602.pdf
    • https://cdn.shopify.com/s/files/1/0445/2987/7151/files/bernoulli_differential_equations_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/canoscan_lide_110_driver.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/79745748097.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/titavufalesa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9478/5694/files/51619667791.pdf
    • https://cdn.shopify.com/s/files/1/0431/1197/3026/files/10609975468.pdf
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/nidujivanefisim.pdf
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/essential_hypertension.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_off00008028.bin
be2c435ec8bad5be05c811860b8c875b2d372fa9ed4ca7d431f763d43a14cec3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8028 5132 bytes
font_01_sfnt_off000091a3.bin
bbc9170e320923fa0551e3f484caa3c9b054e652de2f8bae27950a3ffde1efc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x91A3 11136 bytes