Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f060e49e3e90ccc…

MALICIOUS

PDF

34.3 KB Created: 2020-08-28 01:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a77f516f2b3c372f264c2feea4337e2f SHA-1: eb70e49bccb1ba79be37f0bc6291f6f3d0cad917 SHA-256: 6f060e49e3e90ccc45e85f036aad8294a0714ae777db3151035ca329595b967b
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a YouTube music download, aiming to trick users into clicking it. The link leads to 'ttraff.club', which is flagged as malicious. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify and other domains, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/pify?keyword=youtube+music+download
    • http://kepilik.blissfultransition.com/uploads/1/3/1/4/131452903/1493704.pdf
    • http://files.celestepedri.ca/uploads/1/3/1/4/131454733/xelajapela.pdf
    • http://files.queennailbar.com/uploads/1/3/0/8/130813516/dawiwezo.pdf
    • http://pipofazi.aquariumsalesandservice.com/uploads/1/3/0/8/130814058/e9758.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/lukugejatadasujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/56584637119.pdf
    • https://cdn.shopify.com/s/files/1/0438/4532/0861/files/mepowezuzuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/zoputeken.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nexunalazuzifoginiwaboliz.pdf
    • https://cdn.shopify.com/s/files/1/0463/3372/2785/files/mukavititikinamezixop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/nabude.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenipuwewof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/zasexosafofovebarizot.pdf
    • https://cdn.shopify.com/s/files/1/0437/5229/2513/files/64429245897.pdf
    • https://cdn.shopify.com/s/files/1/0435/7400/1825/files/maths_calculus_formula.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/52374900210.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/vaget.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_off00004aea.bin
6569e00db135011ea6bb4c16da601478fa097988261e48af4a06bc8385188f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEA 5184 bytes
font_01_sfnt_off00005c8a.bin
396792ca92e9cde1499c4e20a53832d0f6f91b8fdc4323c329bc67b22df26113		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8A 9316 bytes

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