Malicious PDF — malware analysis report

Static analysis result for SHA-256 68da7fe96cc93afc…

MALICIOUS

PDF

57.8 KB Created: 2020-09-12 03:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5def9e46033859f4c6fe1d8866938007 SHA-1: fe66001468b161e5c6b888af35cc603a77bf68dd SHA-256: 68da7fe96cc93afc3c506b07a42c1f4b65147b046634c3005e8931d63532e3ae
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious websites. The primary malicious URL identified is 'https://ttraff.club/wix?keyword=all+sad+shayari', which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a content-luring or phishing attempt.

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/wix?keyword=all+sad+shayari
    • http://kemimok.ironfistboxing.org/uploads/1/3/2/3/132302794/79e36e72.pdf
    • http://files.perreaultchiropracticrushcity.com/uploads/1/3/1/0/131069897/5794842.pdf
    • http://files.ptsdveteranswife.com/uploads/1/3/0/7/130739831/gabiro_sutemapa_mifuximuzekob_lafadu.pdf
    • http://nokima.roccolovetere.com/uploads/1/3/0/9/130969332/4874009.pdf
    • http://voxobo.feliciasfashionboutique.com/uploads/1/3/2/3/132303134/7813eb715.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negonarufefozosaburesid.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/blank_avery_5195_label_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/63617693773.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/11468021788.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/86737911299.pdf
    • https://static.usrfiles.com/ugd/136d3d_2acf39dc924749c89ce9af7d1c6907ca.pdf
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/3d_max_tutorials_interior_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/14083289166.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d9e.bin
a4d82808213bff7222653fdaebbe814cd4b8b55e1c0de5d9e914c94447022b9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9E 5004 bytes
font_01_sfnt_off00006e94.bin
651b6a5578b1f564863fba7a4394ee128119527b3b2368e192bb9fbdb69f78f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E94 3736 bytes
font_02_sfnt_off00007d29.bin
7922a73e803815c63d771d8ab4c903db239f3dd8c366a83f503a9ae0afb4191b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D29 12688 bytes
font_03_sfnt_off0000a596.bin
b839261ec86653426251ef300bbc0282c9b19b2b55300f264031ffdbed80a13d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA596 16736 bytes
font_04_sfnt_off0000bccc.bin
f1143219a0bd678d0a0b6d096821da43bea0fbc18a2dca90397296e731868598		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCCC 8124 bytes

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