Malicious PDF — malware analysis report

Static analysis result for SHA-256 092b727164fb4a4a…

MALICIOUS

PDF

47.2 KB Created: 2020-09-30 05:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76dc916af9ffb66fed958ac38804716f SHA-1: 78eadc64fd2301e8e01a0d065dd86dbcde6fe014 SHA-256: 092b727164fb4a4abaf180c785ee2f39afa33d9f892a8f198659e022d8f250be
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one pointing to a known malicious redirector. The document body text and embedded links suggest a lure to download a 'strategy guide', which likely leads to malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful sites.

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://cctraff.ru/strik?keyword=pillars+of+eternity+digital+strategy+guide+pdf+download
    • https://site-1037253.mozfiles.com/files/1037253/lixepibotodizijujewo.pdf
    • https://site-1037902.mozfiles.com/files/1037902/gavebivobofobemewi.pdf
    • https://site-1037010.mozfiles.com/files/1037010/jivisotifubesatinasa.pdf
    • http://files.stphilipneri.net/uploads/1/3/1/4/131437626/guliwirun-gapokikoxuku.pdf
    • http://files.dobeeboo.com/uploads/1/3/1/4/131411857/9a280.pdf
    • http://files.twolidesign.com/uploads/1/3/2/7/132740494/2782117.pdf
    • http://files.education-4-change.org/uploads/1/3/1/6/131606094/denaba.pdf
    • http://muwuja.getcartparts.com/uploads/1/3/2/7/132710654/xepiruwak_sijawigotolul.pdf
    • http://files.knickinburkinafaso.com/uploads/1/3/1/8/131871530/ac985070a.pdf
    • http://jikenuzo.thethirtyfirst.org/uploads/1/3/1/6/131637409/guzelaginuv.pdf
    • http://files.yodice.com/uploads/1/3/2/6/132682210/tomopuvuworawibuzab.pdf
    • http://vupaxefed.legacyministries.info/uploads/1/3/1/4/131483245/7674.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/bass_guitar_fingerboard_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/7935/1968/files/best_biodata_format_for_job.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/57645245640.pdf
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/tivinusanilotutivusikilin.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_off00007922.bin
a2a2107c51a308d44e57657588a02d995ef31ee5a245c80e0149ac0543b46585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7922 5404 bytes
font_01_sfnt_off00008bb0.bin
eb8e360b61b0958b7f1de9b3fc31eb1d877b1e83d235bd6037a43823e57e2194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB0 10344 bytes

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