PDF malware analysis — malicious · dd0f47c185004dbc

MALICIOUS

PDF

49.1 KB Created: 2020-07-28 06:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bf15fdc67b0c0af80bea2d1e3f19fc7c SHA-1: 6cf632a03a54bb57b1ffbe8350d4e47eb573ce63 SHA-256: dd0f47c185004dbcc28a504ad3b9fc7b2620bef8d57aff0c7f6c2f910a0b0fba

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to educational materials. The presence of a link farm further indicates an attempt to distribute malicious content or SEO manipulation. The primary malicious IOC is the redirector URL.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=molar+ratio+worksheet+answer+key
- http://files.trustmarkroofing.com/uploads/1/3/1/6/131606965/jikerurule.pdf
- http://files.ramblinghouseshow.com/uploads/1/3/1/4/131453005/4626251.pdf
- http://files.wholenikolenutrition.com/uploads/1/3/1/4/131406036/7326901.pdf
- http://files.manitobarugbyhalloffame.com/uploads/1/3/0/8/130873794/efa1aa1b9f46c2.pdf
- http://files.murphyelementary.com/uploads/1/3/0/7/130739826/3973513.pdf
- https://cdn.shopify.com/s/files/1/0430/4463/4773/files/58630211498.pdf
- https://cdn.shopify.com/s/files/1/0432/3606/5435/files/fafikutetezolikopatav.pdf
- https://cdn.shopify.com/s/files/1/0429/4865/7318/files/33637046184.pdf
- https://cdn.shopify.com/s/files/1/0435/4146/3189/files/26748291281.pdf
- https://cdn.shopify.com/s/files/1/0440/0722/7542/files/39500612210.pdf
- https://cdn.shopify.com/s/files/1/0435/4359/3109/files/tedimatobipevijusinasuw.pdf
- https://cdn.shopify.com/s/files/1/0432/8439/8236/files/16928609107.pdf
- https://cdn.shopify.com/s/files/1/0430/1615/9385/files/gatanaboworip.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55781022724.pdf
- https://cdn.shopify.com/s/files/1/0434/2136/8482/files/99477004469.pdf
- https://cdn.shopify.com/s/files/1/0432/8911/6836/files/pemigebeseto.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006ee8.bin` `d23ca49acd8300a26a4b91f73b4825c74dbc85d02c8ae1456c66d2f4a6bce83b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EE8	4824 bytes
`font_01_sfnt_off00007f54.bin` `71771687bed260b7140cb2a5a6ee2cd4cbd5e26db1d4aa7e02b95fb73dcebcd4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F54	10096 bytes
`font_02_sfnt_off0000a20b.bin` `84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA20B	16060 bytes

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