Malicious PDF — malware analysis report

Static analysis result for SHA-256 95440fe4cfd964a8…

MALICIOUS

PDF

45.1 KB Created: 2020-08-06 15:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63c88e536156c14b0e49f13053f50c9e SHA-1: ab2d2b6200d5c4fad0780fe87ec737ee427ed832 SHA-256: 95440fe4cfd964a8fc3b3dc3dd89e00191addcb066ccaa8666ab745c3e4f539f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=autoimmune+hepatitis+diet+pdf', suggesting a lure related to health information to entice users to click the malicious link. No scripts were extracted from this sample.

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.com/pify?keyword=autoimmune+hepatitis+diet+pdf
    • http://loban.mrsbrooksatbaldymesa.com/uploads/1/3/0/8/130873951/zamezo-zoderijojen.pdf
    • http://surejukop.mobileinstallationgroup.com/uploads/1/3/0/7/130775795/lerazixadumosab.pdf
    • http://files.citruscountyspeedwayandtrack.com/uploads/1/3/1/4/131406234/lozis_segidev_rowovidodat.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/sutomasatowaxejupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/30477387844.pdf
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/60783341026.pdf
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/nisikagukasipubuniboko.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/73493018699.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/30571079915.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/poxagajezevuvujosadixaja.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2098/files/hack_facebook_password.pdf
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/sawugu.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_off000063ce.bin
39bff73b89ef7a3d9748caed742f12efb2cae02da980bb87e54da7385bc8b9fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CE 5024 bytes
font_01_sfnt_off000074b3.bin
8333445a18fdf67f78204a6578d775a5b91af9cbf459b49fde15dac9f2c92d40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 11232 bytes
font_02_sfnt_off000099f3.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99F3 4324 bytes

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