Malicious PDF — malware analysis report

Static analysis result for SHA-256 49763ec8fbfb97ae…

MALICIOUS

PDF

57.7 KB Created: 2020-08-19 05:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 882993f83c1bfe0a6ec45eda5e9dd1a4 SHA-1: 4f7d716dc2e84387e55ae768fe6e0aa6c73f39df SHA-256: 49763ec8fbfb97aeef27d34097106af7d6508df840cd632eb54c53aa772193ac
128 Risk Score

Malware Insights

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

The PDF document contains a lure related to a 'Centrelink youth allowance parental income reassessment form'. It includes a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=centrelink+youth+allowance+parental+income+reassessment+form'. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, many hosted on Shopify. The document body itself contains the malicious URL, suggesting an attempt to trick the user into clicking it.

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.
  • 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
  • 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=centrelink+youth+allowance+parental+income+reassessment+form
    • http://files.stpauls-edison.org/uploads/1/3/1/4/131408415/nenubil-xuwemu-wugajonoweveka-keredurijuva.pdf
    • http://timabis.streettattooevents.com/uploads/1/3/0/9/130969762/7747405.pdf
    • http://kasesujon.rubabypens.com/uploads/1/3/1/4/131406390/xoruramo_pexabo_zutoza_dodagatevowaziz.pdf
    • http://suzexe.countrysidechurchseminole.com/uploads/1/3/2/6/132695925/kiwulofog-porobedodode-najokufu-bebusoseg.pdf
    • http://files.glmarina.com/uploads/1/3/1/3/131383953/935fe82.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/al_kahfi_latin.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/amityville_horror_novel.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/bubonejokuwamaref.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/25777900562.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/36084666415.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/40179869085.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/65643627909.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/rotigaxeta.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/xerufozuguxonisurikabog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/vonafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/buku_bahasa_inggris_think_globally_act_locally.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/xibowigegetenisibikisu.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_off000094e5.bin
1b9f64b7e38ecaa84dc312857d01d6dc00bc9c403d60655dfd651fb15c028d9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94E5 5416 bytes
font_01_sfnt_off0000a735.bin
3f9d3e466e5794cad42e5dd4f02519b1e590c894dd4f9215b1e40a69c15e9ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA735 10472 bytes
font_02_sfnt_off0000cb0d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0D 4324 bytes

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