PDF malware analysis — malicious · 40993c280f5e760f

MALICIOUS

PDF

58.1 KB Created: 2020-07-31 07:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8053c0ed8c7b0084a00f972d1b3a1d6a SHA-1: fd70d7c750952d015da056cbbe8b2641509c4321 SHA-256: 40993c280f5e760fe6bc5c10b7016ab5fdcbe86c407752651839a72063b25fa8

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=biological+oxygen+demand+meaning+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'Biological oxygen demand meaning pdf' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The primary goal appears to be redirecting users to potentially harmful content.

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=biological+oxygen+demand+meaning+pdf
- http://files.gruffcorn13.com/uploads/1/3/0/7/130775536/53dc180f9b45.pdf
- http://files.mywright2bdazzled.com/uploads/1/3/1/3/131383586/ec8a2.pdf
- http://files.davidemariano.com/uploads/1/3/2/6/132681694/12d8564.pdf
- http://files.westlakejuniorwomensclub.com/uploads/1/3/1/6/131606284/9103500.pdf
- https://cdn.shopify.com/s/files/1/0429/7634/6266/files/71546357056.pdf
- https://cdn.shopify.com/s/files/1/0433/4115/2421/files/bonuzafobilugosi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
- https://cdn.shopify.com/s/files/1/0435/9972/4702/files/68275977525.pdf
- https://cdn.shopify.com/s/files/1/0432/5516/9186/files/xasupaxinuzowafag.pdf
- https://cdn.shopify.com/s/files/1/0430/0288/8351/files/romaw.pdf
- https://cdn.shopify.com/s/files/1/0433/2994/5758/files/dapelolov.pdf
- https://cdn.shopify.com/s/files/1/0435/7927/7467/files/ginegenuforinivapegif.pdf
- https://cdn.shopify.com/s/files/1/0434/4047/2214/files/xosetamiwirigeji.pdf
- https://cdn.shopify.com/s/files/1/0434/3886/6593/files/vebamubugin.pdf
- https://cdn.shopify.com/s/files/1/0430/3532/8663/files/12602885498.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.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/
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000a603.bin` `0f341803198e8c214cd90b0a08eda219461797bf21f0037b7a423a6167209d19`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA603	5128 bytes
`font_01_sfnt_off0000b75e.bin` `ba949d7fd37427c442a354287909c357c96e82a226ba2b5a1855e28aa80e7cf1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB75E	10640 bytes

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