Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b60ba831c2721d…

MALICIOUS

PDF

45.9 KB Created: 2020-08-11 03:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ad5389bd50daa6e5e6461cd182b87cb SHA-1: e73c07240a29e321a323ea9a71aba2a54b023935 SHA-256: 22b60ba831c2721d26eebad91d5924215bb88f508b5d8b6bc9849234c08bb410
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=belajar+grammar+bahasa+jepang+pdf', is identified as a malicious redirector. This indicates the document's purpose is to lure users into clicking malicious links, likely leading to further compromise.

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=belajar+grammar+bahasa+jepang+pdf
    • http://files.judithfuchsphotography.com/uploads/1/3/2/6/132682681/61722.pdf
    • http://files.effectivepracticeeducation.com/uploads/1/3/2/6/132681634/6c57455.pdf
    • http://files.sai-deltamu.com/uploads/1/3/2/7/132712222/6314576.pdf
    • http://tikepum.celebrityartbypam.com/uploads/1/3/0/7/130739664/gesebaviruloxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3941/files/fikop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/2020_calendar_printable_with_holidays.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/jomexevu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9766/files/6022395562.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/litotiguvomiwada.pdf
    • https://cdn.shopify.com/s/files/1/0433/3371/4070/files/78704909677.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5383/files/27628509617.pdf
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/53708793235.pdf
    • https://cdn.shopify.com/s/files/1/0431/3396/0341/files/23135519073.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/buzafuzuresirozolugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/39780253444.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5387/files/35621843414.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_off000074a4.bin
d01bfb3493951de5d400f7d1d06ed846a039d5a001b6a106cc6d051580e4f3fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A4 5720 bytes
font_01_sfnt_off000087ee.bin
a9bede481ac1b451b00c7d629aeebff072e846da35db45d0934c0dabc891ef97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87EE 10060 bytes

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