Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0aea5c6c1ee2c5…

MALICIOUS

PDF

40.4 KB Created: 2020-07-29 21:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00a648acc8aa347cf16addceb8c63b49 SHA-1: 8fdaef33d8a37161a7099fd8809c37c98250c931 SHA-256: fd0aea5c6c1ee2c54442f056751cd914c2107247859cb603e0b7de18b984c10f
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is designed to lure users into clicking on further links. It also features a large number of SEO-optimized PDF links hosted on Shopify, likely to improve search engine ranking and attract more victims. The ML classifier strongly indicates malicious intent.

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/wb?keyword=muharrem%20ergin%20osmanl%C4%B1ca%20dersleri%20pdf
    • http://files.prayforrenewal.org/uploads/1/3/2/6/132695554/jawiwiri-vafino.pdf
    • http://files.ame-geolab.com/uploads/1/3/0/7/130776573/1c972e.pdf
    • http://files.designsbyoc.com/uploads/1/3/2/7/132741110/ginutowofakan.pdf
    • http://files.prayforr
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/xevir.pdf
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/vusobomesotu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/10808449671.pdf
    • https://cdn.shopify.com/s/files/1/0432/6562/2184/files/masarinijipo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/17575499999.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/2002723306.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/43039346035.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/95724403534.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/81417935738.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/xefosabarapeluguwibinogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/pufipufefogamukozazedejix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/tumunejijisut.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/2645693720.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_off00005c8e.bin
ab4c55a15d19527f13fa5415e92d1c219253180f090b9ae5900fae5b08c5cf1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8E 5408 bytes
font_01_sfnt_off00006ed2.bin
a9ff0611e12da995d0516b11e8d4a4fc44abf3b959325ea5eb6a61d688c6fd98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED2 10384 bytes

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