Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad30f1008950e86…

MALICIOUS

PDF

47.7 KB Created: 2020-08-04 13:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f82743531434db315f806c90b92ff1a0 SHA-1: f31a8902ba2d72e38a06043ea7c9705256d0c670 SHA-256: 0ad30f1008950e86b53295d375799bb9c6d39e712269f619c950c3ab1e0732bc
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to lead the user to harmful content. The embedded URL 'https://ttraff.cc/pify?keyword=interior+design+detail+drawings+pdf' is a critical finding, suggesting the document is designed to exploit user curiosity for malicious purposes. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=interior+design+detail+drawings+pdf
    • http://files.my-spiritual-garden.net/uploads/1/3/1/3/131379111/bezobose-nigamebul-mevefawaw-najolilu.pdf
    • http://files.sunnysidesymphony.org/uploads/1/3/0/8/130814666/kisigegis.pdf
    • http://files.derrickjackson.com/uploads/1/3/1/4/131437295/ffa4a70.pdf
    • http://files.boothfolio.com/uploads/1/3/0/8/130814209/ketuwivotelixem_sejinito_revux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/76989938398.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/3595490362.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/91693060889.pdf
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/79357310708.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/zesasulugiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/gimolifara.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/23501163490.pdf
    • https://cdn.shopify.com/s/files/1/0433/6196/0091/files/53823211528.pdf
    • https://cdn.shopify.com/s/files/1/0431/4572/4055/files/puruxujamosala.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/posonuxefiwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/48625514920.pdf
    • https://cdn.shopify.com/s/files/1/0439/2799/4523/files/wolasekupiwule.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_off00007d21.bin
cb739e513348a27ae0ac5f7c0fe6d17e6bbe7840f875f8bb8ec98cc882b92074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D21 5236 bytes
font_01_sfnt_off00008f0f.bin
9686825049302227774e4003140921dfda88f19f81b751392e43b93e05c88f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0F 10112 bytes

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