Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a78686e415ef66b…

MALICIOUS

PDF

32.7 KB Created: 2020-09-18 00:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84c9fcf90a74ae6b1aa7f499bce823e6 SHA-1: bcfc19a7b0aae18d6295b0b873fda324320878a6 SHA-256: 0a78686e415ef66b7543af0ed4b5e44be678cba2ca367c6c8c2c1a369765d9cc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a link farm, designed to redirect users to malicious infrastructure. One such link, 'https://ttraff.club/wix?keyword=nioh+return+of+the+gourd+easy', is flagged as a malicious redirector. The document's content appears to be a lure, possibly related to a video game, to entice users to click these links. No scripts were extracted, but the presence of multiple malicious links strongly indicates an intent to lead the user to a compromised or malicious site.

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=nioh+return+of+the+gourd+easy
    • http://resopebed.livelaughlovedream.com/uploads/1/3/0/7/130738955/8979a75c.pdf
    • http://fogibi.handsfeetandwings.candletothesun.com/uploads/1/3/2/6/132681464/wubusifak_bomivasixivid_wufureju.pdf
    • http://files.teamsabo.com/uploads/1/3/0/9/130969498/2287282.pdf
    • http://files.lovebatonrouge.com/uploads/1/3/0/8/130814120/2059525.pdf
    • http://sebaradi.carlapasqualini.com/uploads/1/3/1/1/131164394/benajekezituj.pdf
    • http://jenokataz.abridgedinvesting.com/uploads/1/3/1/6/131606620/fesawiduxakinagaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a586a7d5-4387-469a-831f-ce010c37ca2a.filesusr.com/ugd/98e2de_de98f17564fe45b3a451c42d2fa86a92.pdf?index=true
    • https://ffa4f73e-7f12-40db-8ae4-9d42a4f4916e.filesusr.com/ugd/ace02d_03b9ee368ba641fbb5e6212d60c6e100.pdf?index=true
    • https://89d9d0c8-499d-434f-a5ae-1ab5c4c722ed.filesusr.com/ugd/e3ff21_75be04f8f02c4e1f953a68dcc6450fb8.pdf?index=true
    • https://02011adf-0f80-4842-ab7b-6d0e7fe92291.filesusr.com/ugd/b48b60_633eb38d41374f97a7e9f05f7b056bc4.pdf?index=true
    • https://14fec5c5-2eac-40b8-9f84-e415a7aa3cf7.filesusr.com/ugd/808cd0_736614e0c9c8446da9a7ac0a5264cb48.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0438/3549/0461/files/filmora_mac_crack.pdf
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/android_studio_barcode_scanner_google_vision.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_off0000434a.bin
686ff8b9e5a9f6eff6a366b49d1573c5bf8b093eb3e61f3f22cfc4b325b9ce42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x434A 5208 bytes
font_01_sfnt_off00005508.bin
398ce82a82958e0c91a689f917fb74d8f8d295099e068691b4093cc6c16d6080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5508 9784 bytes

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