PDF malware analysis — malicious · 435659d550150681

MALICIOUS

PDF

48.5 KB Created: 2020-07-30 16:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8681839730f858476b4098acac5f2960 SHA-1: fdf984a666d83acd5bd71122c9c40314e1e643f9 SHA-256: 435659d55015068193eae721f086fe6280a5eae9b8df0c8eafc3848f8358b800

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 external links, identified as a PDF link farm. One of these links points to a known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, but the presence of numerous links, including one to a malicious redirector, strongly suggests an attempt to direct users to harmful websites. The file was generated using wkhtmltopdf, a tool sometimes abused for creating malicious documents.

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.ru/pify?keyword=campesinos+colombianos+pdf
- http://files.alethearoygadbois.com/uploads/1/3/0/7/130776104/jenomugakud.pdf
- http://files.snugglehose.com/uploads/1/3/1/4/131438190/8400704.pdf
- http://files.tamimurphy.com/uploads/1/3/1/3/131381078/zibazesarutoj_watozufisema_zigabuzala_bonirot.pdf
- http://files.frederickcitybaberuth.com/uploads/1/3/0/7/130739383/6335122.pdf
- http://files.chaletretreatministries.org/uploads/1/3/0/8/130874608/2d23e1e.pdf
- http://files.frederickcitybaberuth.com/uploads/1/3/0/
- https://cdn.shopify.com/s/files/1/0432/5628/3296/files/48475937340.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
- https://cdn.shopify.com/s/files/1/0430/8077/7882/files/loboravafobipamo.pdf
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/82815474985.pdf
- https://cdn.shopify.com/s/files/1/0430/6203/4589/files/tojededajiwa.pdf
- https://cdn.shopify.com/s/files/1/0431/0515/7269/files/panek.pdf
- https://cdn.shopify.com/s/files/1/0427/7954/1671/files/gelaguvab.pdf
- https://cdn.shopify.com/s/files/1/0437/7152/7330/files/waxatudibagulowularopog.pdf
- https://cdn.shopify.com/s/files/1/0431/1433/2309/files/37476067881.pdf
- https://cdn.shopify.com/s/files/1/0433/8286/6083/files/75830114582.pdf
- https://cdn.shopify.com/s/files/1/0431/5480/0797/files/disupisetavek.pdf
- https://cdn.shopify.com/s/files/1/0428/2531/8563/files/dobut.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000081a7.bin` `f2570ab093b9ad9bd61324593b3d419667920784d5fde837cb073993a6825dfe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81A7	5076 bytes
`font_01_sfnt_off000092c7.bin` `ef7e3cdf6a8f527071ccd89043efdc35e59371cbbe9ccf776473b72cb4c88ba5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92C7	9956 bytes

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