Malicious PDF — malware analysis report

Static analysis result for SHA-256 513fc46e3fef8246…

MALICIOUS

PDF

41.0 KB Created: 2020-08-30 03:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b41ca788fb52a28743b3e1b6872c534 SHA-1: b2d9c612c941c41f6c6e250b2a71b2b659bb90c9 SHA-256: 513fc46e3fef8246959f698942efb7a26d2a11845c4739986da10f3435952b74
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 a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/wix?keyword=fit+bit+ionic', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'Fit bit ionic' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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/wix?keyword=fit+bit+ionic
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/96018609152.pdf
    • https://cdn.shopify.com/s/files/1/0430/0062/7363/files/gaduzadojobuw.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/alphabet_grec_prononciation.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/99555255133.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5235/files/kerevadiran.pdf
    • https://static.usrfiles.com/ugd/dad90e_564b698188dd48f08431ace13f72082e.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_7d21a08354b046c496af4e462ed56c8b.pdf
    • https://static.usrfiles.com/ugd/9f6a24_85bbe32c13a743d6bba5c569b54664d5.pdf
    • https://static.usrfiles.com/ugd/822ecd_8e87203a311f410f96dea610b5f89b01.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/tipping_point_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4892/7386/files/12876127259.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6556/files/kokuxogaruvedofubozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/alberta_separation_agreement_form.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_off0000662a.bin
a05b498788bff57a0ae5f3b61a367fbccf5b7c05c29d4e51cd35b707682e1df9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662A 4372 bytes
font_01_sfnt_off00007518.bin
1f5534bd0125e57fe8155107231464f5563fb3b5abe113575b026d078c1da1e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 10108 bytes

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