Malicious PDF — malware analysis report

Static analysis result for SHA-256 3383080e8974cccc…

MALICIOUS

PDF

47.6 KB Created: 2020-08-09 07:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 741c1eb4eff3d4086fa8b1a0e72204e2 SHA-1: 6c3efd9096d2b4fbdc193c95eaee7f06b1b80a5f SHA-256: 3383080e8974ccccfdac6e21526d7a0ed1a821f70a23206e17b32aa92bc14371
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=assets+and+liabilities+format+in+kannada+pdf'. The document body, though corrupted, contains text suggesting it is related to 'assets and liabilities format in kannada pdf', and heuristic firings indicate it is a malicious redirector and part of a link farm. The presence of a 'fake invoice / payment lure' and 'visual download / call-to-action button lure' heuristics further support a social engineering attack pattern.

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=assets+and+liabilities+format+in+kannada+pdf
    • http://files.3spellcastersandadwarf.com/uploads/1/3/1/4/131453725/gajeganenowixe.pdf
    • http://winola.mrsbobbins.com/uploads/1/3/0/7/130776791/kawugaxugeve-wiwupoxakarobi-peromixeva-zupemiwusoxov.pdf
    • http://files.everyexperiencematters.com/uploads/1/3/1/4/131406966/cf566bdd87c9c50.pdf
    • http://files.thehistoryenvelope.com/uploads/1/3/1/4/131437457/kuwemikiwaxupod_migiwenebufewuj_relerubadamuvu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/bessie_coleman_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/boregekofabinasubeteseki.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/lavoxosenuguker.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2038/files/20366445563.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/discord_code_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/bagolopisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/importance_of_medicinal_plants.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/84623653465.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0309/files/76840826883.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/wujujasij.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_off00006b53.bin
a28997aedabb68bd86f0a093cc1f2921b38dee7cc8189b9f6804e3e20080134b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B53 5380 bytes
font_01_sfnt_off00007d82.bin
53731af803de701aaa510c46ee28e55abff9de1cf593cbda14c6494fe93caa1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D82 4544 bytes
font_02_sfnt_off00008e55.bin
3413b9c280116f9ec7cca280cb013b3104cfe5565aa711ec225b5df209bdc9a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E55 10140 bytes

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