Malicious PDF — malware analysis report

Static analysis result for SHA-256 7380de09cf41f626…

MALICIOUS

PDF

41.4 KB Created: 2020-09-03 07:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 57e2a2b2f06a0ed054d4ba18f96b2cdb SHA-1: 4da7296d38b50432f08cef9e9084517ae147e41e SHA-256: 7380de09cf41f626e0c55b8ec7585c0a65e203a4c9d3c08a9afefccc33f1a950
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The link leads to 'https://ttraff.club/pify?keyword=archery+master+3d+mod+apk+androidoyun', which is flagged as a malicious redirector. The document also contains a large number of links to Shopify, likely part of a link farm to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=archery+master+3d+mod+apk+androidoyun In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/nova_launcher_prime_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/12985823296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/best_5_minute_guided_meditation_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1657/6424/files/buwuwige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/le_contrle_de_gestion_dans_les_administrations_publiques_marocaines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/94628254255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/78587399994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/97673721544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2200/4903/files/format_factory_windows_7_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/gipejibuxonuladubukamezeg.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1afed4af97774fb89ac2cd30adfd8427.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9c0842_268cfb34a5884b31b29ae58a5aec9f76.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1d64af_f3d07bf74a174217b9598452881b76d4.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6130 5600 bytes
SHA-256: ed12ac1a242badf2be3d9dc640505064925caebb694045ea488917cce82df28c
font_01_sfnt_off00007415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7415 11016 bytes
SHA-256: 2131da612e0d19085ef9c75314c7e1737ed4bdd638e0245713862d86426cbbad

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