Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d823f693f62381…

MALICIOUS

PDF

57.4 KB Created: 2020-08-13 21:49:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7c531e6d1602d4bb8f3d69c3a3cff06 SHA-1: 395409157a86d79275036a9bbd73315b9f5b9403 SHA-256: 09d823f693f62381377cc4f8745537802ca9750c77c7024eaa44b171afeb11db
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to a 'sheet mask in dubai' and references to Shopify URLs, suggesting a lure to disguise malicious activity. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful destination, likely for phishing or malware delivery.

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.cc/pify?keyword=malie+sheet+mask+in+dubai
    • http://files.waiheelimu.org/uploads/1/3/1/6/131607174/nomuvawezilamaranu.pdf
    • http://gajavufo.stepschristianacademy.com/uploads/1/3/2/8/132814930/d83dfc89d8d51d.pdf
    • http://files.83jrey83.com/uploads/1/3/2/6/132695829/7ef70da64.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8643/6759/files/vudigokoxonosifurip.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/tofelolivuxala.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/basic_commands_in_linux.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/82942820968.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/65357563745.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/lemafiguvimixiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/87751123624.pdf
    • https://cdn.shopify.com/s/files/1/0438/4181/4693/files/jubidomivaradutazox.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/37245930997.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d52.bin
ca76997379172eee33085c8482c7323aa4c6490e5d9b0518affecd078e7eaab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 2912 bytes
font_01_sfnt_off000087ae.bin
59b0d7f5afb9d417862670d08de48a713c5c8d147b4a53c084645d18b80d2283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87AE 5180 bytes
font_02_sfnt_off00009921.bin
39b04cdf5c93828c1577625597f341dfcb0dc6b1536e41bc41b3868208210f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9921 12120 bytes
font_03_sfnt_off0000c2cc.bin
78b6664c6cd579d4ff56aff478d5269b8e3b186d56dadcf5f020c8684fe8c1ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2CC 16256 bytes

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