Malicious PDF — malware analysis report

Static analysis result for SHA-256 e91137ed6ff8d05f…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 12:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 151cd85c136babfca341e2287db42818 SHA-1: cbad5d99063bdf108e6a473e4566305b55506138 SHA-256: e91137ed6ff8d05ffca82659d7dfc50f94e611fbe0e4a9c7dbbd87303ff11920
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at ttraff.cc. The document body text, though heavily obfuscated, contains the string 'Printable birth plan template pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a visual download button heuristic further supports this social engineering tactic. No scripts were extracted from this sample.

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.
  • 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.cc/pify?keyword=printable+birth+plan+template+pdf
    • http://files.whaleroc.co/uploads/1/3/2/6/132695620/5880818f82.pdf
    • http://files.griffis4history.com/uploads/1/3/0/8/130873783/5703aa.pdf
    • http://dimajebat.jksporthorses.com/uploads/1/3/2/8/132814930/dujuvobokijagarafad.pdf
    • http://files.rebelplantation.com/uploads/1/3/1/3/131381450/wuxun.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/pazov.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/24086269215.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/fekosijivofojaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/31991068408.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/kilisigobazidijarova.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/crazy_train_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/algebraic_identities_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/71610940560.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/geforce_experience_install_failed.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_off00006b73.bin
482b7f70e867926fccaca81eb2ffa96c680d998ea5d341582e8066bc11b19429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B73 5244 bytes
font_01_sfnt_off00007d14.bin
c6eae5dc8013f4ce85a0082df98a745317e8480f0444fb338cd6e294207dcedf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D14 10060 bytes

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