Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d59511ec0560df6…

MALICIOUS

PDF

41.7 KB Created: 2020-08-04 13:36:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad1abdf294646c0b8698a365b0d9f2f9 SHA-1: 76086f17f6bc77396d9ad30800d4119b617af7fd SHA-256: 3d59511ec0560df6f976fd56681b17b4ec34fcc35c38c1876daba7c7399b2b0e
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a search query for a "Toyota service manual online free". This indicates a phishing or social engineering attempt to direct users to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farming used to improve search engine rankings for malicious content.

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=toyota%20service%20manual%20online%20free
    • http://files.beautyonlinestore.co.uk/uploads/1/3/0/7/130739163/guxesav.pdf
    • http://files.westbankartguild.com/uploads/1/3/1/3/131383533/milulaluxovoji.pdf
    • http://files.thomasklassen.net/uploads/1/3/1/4/131452804/pamolukuxer.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/xenukifarevig.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/70002673088.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/pokebamamerugiwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/50314942523.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/rebogo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/93884613913.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/favararizikimuleta.pdf
    • https://cdn.shopify.com/s/files/1/0434/1723/9704/files/55458495592.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/54156798915.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5798/files/kikebexuvasilejejawuzere.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/budej.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1503/files/wureridopilekiri.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_off0000661b.bin
6032dde9d6c10a4b1665daf2f605038a75449ad3a7329ab9872e278d22c638a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661B 5136 bytes
font_01_sfnt_off00007790.bin
0fb783e14282570b37c32d8b5e30a80e293eebc6070758e14ce0caa6209907f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7790 10112 bytes

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