Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0cbc7d109d061d5…

MALICIOUS

PDF

35.5 KB Created: 2020-08-09 13:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 859e4d806fb3f475d8d0b8dcc1b9f7dd SHA-1: 4e7529a55cf60c1fb1810198dff4d3085d320b8b SHA-256: b0cbc7d109d061d531c2e87dfe60343826c32718174d1d0e811e589998b3f31b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify and various domains, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.com/pify?keyword=toto+africa+piano+music+pdf
    • http://xuravo.fishersfarm.org/uploads/1/3/1/6/131606289/dunidi-lojaw-zerusuxixaxad-xaxegulibejik.pdf
    • http://jupejen.sp-arms.com/uploads/1/3/2/6/132681504/wojukinob_gosutolixubipil.pdf
    • http://files.mrssouthernsclass.com/uploads/1/3/1/3/131380720/vuxemuledav.pdf
    • http://files.kendrakoivu.com/uploads/1/3/0/7/130775876/2892536.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/32365970841.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdf
    • https://cdn.shopify.com/s/files/1/0435/2360/4631/files/muwukapekokejonaremaneruk.pdf
    • https://cdn.shopify.com/s/files/1/0454/6661/5966/files/automotive_engineering_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/zumerefod.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/zesabebi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/39468689894.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/62539314190.pdf
    • https://cdn.shopify.com/s/files/1/0434/1297/9869/files/gebojalaxozigokof.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/mabunutifiniw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9301/5195/files/voxigatusero.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/79640645531.pdf
    • https://cdn.shopify.com/s/files/1/0433/9102/5306/files/52967926755.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_off00004d33.bin
03bc7d758dd67770abfe1334ecc3d1cf4b7cd819dbb9d377b58f8b5b2730107a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D33 5220 bytes
font_01_sfnt_off00005ee0.bin
8f8544f9ef16536d37acfd3a90288ff596da3584c801f10575ffb9c662303cbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE0 10028 bytes

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