Malicious PDF — malware analysis report

Static analysis result for SHA-256 05eb8e0428b69a5f…

MALICIOUS

PDF

58.3 KB Created: 2020-07-31 17:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56f6c8c8f3471a19af9c0cbf3ae956b4 SHA-1: ef6093363865c3e9cd8338cee521cdfa42887fd1 SHA-256: 05eb8e0428b69a5f8b0c965624d2e3b7eef7e7a80fb9f3a264e7d2dbd750a865
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for an iPhone 10, 6, and embeds numerous links, one of which, https://ttraff.ru/pify?keyword=iphone+10%252C+6, is identified as a malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for phishing. No scripts were extracted, but the embedded links are the primary vector for this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=iphone+10%252C+6
    • http://files.crescentwaves.co.uk/uploads/1/3/1/3/131383533/vosis-zisikuta.pdf
    • http://files.fearnotministries.com/uploads/1/3/1/4/131453124/begadibex.pdf
    • http://files.crypto-decrypted.com/uploads/1/3/1/4/131437689/dasijajufo.pdf
    • http://files.owenbloomfield.com/uploads/1/3/1/3/131381540/357843.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/31523069713.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/lafubakirofikavam.pdf
    • https://cdn.shopify.com/s/files/1/0435/4280/6680/files/lozub.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/69071182606.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/68268336432.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/24903338693.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/lipazolebofepifaxuselug.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/15294446873.pdf
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/86848203103.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3473/files/29739269605.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/jixamojodegoraruburip.pdf
    • https://cdn.shopify.com/s/files/1/0434/4633/7703/files/4255393592.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/ditimifuxuxidowu.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e24.bin
ed4f5433cb0ed9a4bba55bb014fd73db5d315a334c35af6853e2c7f2b3d30ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E24 4732 bytes
font_01_sfnt_off0000ae54.bin
980c8cebcd92b8aa19c17586b1de2518ca77cf0022c2f8f87e82970ac370fa21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE54 14952 bytes

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