Malicious PDF — malware analysis report

Static analysis result for SHA-256 7484fc1bd6cfad20…

MALICIOUS

PDF

49.0 KB Created: 2020-07-21 17:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07e94a24682079381a1104ec761243cf SHA-1: 723699e48cdf6ba5ef055b6670b84ffe082e24bd SHA-256: 7484fc1bd6cfad2026ba9b7b09b3d5b1b5e05d6d6003ceaac3bb1c8f6e47657a
154 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which point to a redirector service. The primary redirector URL is https://ttraff.cc/pify?keyword=50+exercices+pour+pratiquer+les+accords+tolt%25C3%25A8ques+pdf, which is flagged as malicious. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=50+exercices+pour+pratiquer+les+accords+tolt%25C3%25A8ques+pdf
    • http://files.ultramtb.net/uploads/1/3/0/7/130775198/8833163.pdf
    • http://files.wildwestrebels.com/uploads/1/3/2/6/132696015/00a0b6c01d1de1b.pdf
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.kingsvilleroofingcompany.com/uploads/1/3/0/7/130776511/95571f40a9a8.pdf
    • http://files.taragraceericson.com/uploads/1/3/1/6/131606490/9294033.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/mutum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/60421125256.pdf
    • https://vavokoze.files.wordpress.com/2020/06/5324622172.pdf
    • https://zudarimun.files.wordpress.com/2020/07/ravaxolezem.pdf
    • https://duzulowapal.files.wordpress.com/2020/07/dabafameguledowudipiz.pdf
    • https://fepudepamori.files.wordpress.com/2020/07/girinupuzexoxizevaxukudip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/kekasetugudebonebuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/5285/9543/files/35431251895.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90675932679.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76423385748.pdf
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/loborigojepax.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/xikiwudarokiregubom.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/ravisivezawineguraxam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1299/files/84486579475.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_off00007c22.bin
3ac640e478a76e78bc1b960da171b391cf864356889434e5ed4407d144044018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C22 5432 bytes
font_01_sfnt_off00008e69.bin
3b958ce7c1c9cc2b5c0fdb780793c6a17675885161bdbb3454d4cdcc7b4967df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E69 11936 bytes

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