Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bae79ebda8e438d…

MALICIOUS

PDF

46.7 KB Created: 2020-08-03 22:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6046bb2f6bf81db8f1fdfdb3432ccffd SHA-1: 24a1b0274e1e1f5dc204bc9ed28dbe5eb773eaf0 SHA-256: 1bae79ebda8e438dba1e7bb1c39b57060cccb747a3b0edfb2e117b16a682c629
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text suggesting a lure for 'Marathi books online pdf free'. The primary malicious URL, 'https://ttraff.cc/pify?keyword=marathi+books+online+pdf+free', is a known redirector. The document's purpose appears to be to trick users into visiting this malicious link, likely leading to further malware delivery or phishing.

Heuristics 3

  • 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.
  • 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=marathi+books+online+pdf+free
    • http://files.surgicalassociatesmb.com/uploads/1/3/0/8/130813643/jumumazugepu.pdf
    • http://files.7thheavenwithjo.com/uploads/1/3/1/4/131409309/264ccf18e7.pdf
    • http://files.eileenwalker.com/uploads/1/3/2/8/132814343/vajometezemo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2342/5955/files/66497919101.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/47190339310.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/xusidamolatawugom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0985/8984/files/besaxurokimevuzevaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/5432/6179/files/13299493113.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/2742481113.pdf
    • https://cdn.shopify.com/s/files/1/0433/8240/7335/files/diguloriwakifusajakanijak.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/55442144750.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3877/files/38833957682.pdf
    • https://cdn.shopify.com/s/files/1/0438/0327/9517/files/60197408766.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/kugipawaxaboz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7723/8945/files/being_in_balance_wayne_dyer.pdf
    • https://cdn.shopify.com/s/files/1/0437/8791/1319/files/63266382422.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/kovipotagelekedi.pdf
    • https://cdn.shopify.com/s/files/1/0443/8137/2582/files/docker_kill_container.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/
    • https://cdn.shopify.com/s/files/1/0433/8240/7335/files/d

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000779e.bin
5b3e9525810eeda3bc0a00e7dac08a05ea9989f5956497c29b8ce875a1aa3fc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x779E 5340 bytes
font_01_sfnt_off000089c4.bin
5c861f762daf1a65ba7a6db0239dd132480ce9dfe5c194ed70f989299b578b1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x89C4 10384 bytes