Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c68cee87b805930…

MALICIOUS

PDF

44.4 KB Created: 2020-08-23 18:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1091f238c9cc63f05b2cc182240ae0d SHA-1: 66a1283fbd6ceba19f172a260a83dd06ef8f4955 SHA-256: 2c68cee87b805930a8bbdc459ef72efa2887d049426cde54916f70d5e052774c
150 Risk Score

Malware Insights

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

The PDF contains a link farm of numerous external PDF files, with one primary link pointing to a known malicious redirector. This suggests the document is designed to funnel users to malicious infrastructure, likely for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

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=ff13+mission+28+guide
    • http://files.hiramsart.com/uploads/1/3/2/8/132815767/e782f53b09d1d5.pdf
    • http://files.hollywoodfashionmerchandise.com/uploads/1/3/0/7/130775554/9369037.pdf
    • http://files.youngcalebcarrbowtie.com/uploads/1/3/1/4/131454670/8439e2be44f6c.pdf
    • http://levafexi.springhillbaptist.org/uploads/1/3/2/7/132712207/8909751.pdf
    • http://gaxolokad.katiebielefeld.com/uploads/1/3/2/7/132740405/7319116.pdf
    • https://cdn.shopify.com/s/files/1/0438/4037/2896/files/95066062142.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevimija.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/16796795579.pdf
    • https://cdn.shopify.com/s/files/1/0434/5964/1496/files/35694080189.pdf
    • https://cdn.shopify.com/s/files/1/0432/3495/1331/files/our_god_is_an_awesome_god_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/34355501978.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/jabezomupufoziduro.pdf
    • https://cdn.shopify.com/s/files/1/0449/8993/9871/files/nalatimovide.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_off0000701b.bin
1e6c6b7afd89c602e3a3b87053c74a3ff91cb0a48c57e1b80a5b14bf941014d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701B 5384 bytes
font_01_sfnt_off00008267.bin
140964a27080cedacdd96ffb453877ae1e0873482d7a032187b9f983e6ae27ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8267 10240 bytes

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