Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f31c812aaa00ef5…

MALICIOUS

PDF

44.5 KB Created: 2020-09-23 20:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f0d095f38e9cc8ecfcc03e644f50777 SHA-1: 2d200eb8ec266a5b4b419de38d6a2d0cc2157fcb SHA-256: 1f31c812aaa00ef503b109d1e6646f1192df1ba777fe36ddb6fa758f7d13c85a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to known malicious redirectors or link farms. The document body, though heavily obfuscated, contains references to game-related keywords and URLs, suggesting a lure to trick users into clicking on malicious links. The primary attack pattern involves redirecting users to external sites for further malicious activity.

Heuristics 3

  • 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.
  • 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=gun+mayhem+crazy+games
    • http://files.uwfsingers.com/uploads/1/3/2/6/132681322/6811824.pdf
    • http://gavekuno.allisonsanimalacademy.com/uploads/1/3/0/7/130738970/29e7c87c24ca31.pdf
    • http://dofuja.nicrn.org/uploads/1/3/1/3/131382531/d7f3695.pdf
    • http://files.valortabletennis.com/uploads/1/3/1/8/131856232/sajosijebubumut-loludulabin-jezigizejupiga.pdf
    • http://soziferuv.aphotobydre.com/uploads/1/3/1/6/131606186/jawutamofaluwat.pdf
    • http://sixuwej.totalmastersswimming.com/uploads/1/3/2/6/132682883/65a0ad9f3224.pdf
    • http://boziguxo.5049coastalcommunity.com/uploads/1/3/2/3/132303117/nepijajukamivuragimo.pdf
    • http://files.cuestacollegerodeo.com/uploads/1/3/1/4/131483550/f518ae417.pdf
    • http://files.guillozine.ca/uploads/1/3/0/8/130874520/743ee.pdf
    • https://068c6735-a4ef-481e-bf68-c08feae14fc8.filesusr.com/ugd/7baf93_1f0a4ebb5bed4f44b26f529815141c4e.pdf?index=true
    • https://c750f84a-fade-403c-9c0b-5c59371c1d41.filesusr.com/ugd/f1780b_863cb389b50844e490013bbc31030b17.pdf?index=true
    • https://c7d266ca-7a69-4473-a4bf-4e3f70e0d7b7.filesusr.com/ugd/529ba0_05160d39010147049f946cbf48cb1fb5.pdf?index=true
    • https://e3126e33-a06d-48ed-b076-1908d25a6b0d.filesusr.com/ugd/eddc50_aa8b39312d9045718999604c8e057e26.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0484/7534/0961/files/pluscuamperfecto_del_subjuntivo_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0427/6954/7431/files/former_montreal_alouettes_players.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000646d.bin
adc4f56ebc692b977c445bb8e74d9694adaace975d875766752a6a77bd1f98fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x646D 5008 bytes
font_01_sfnt_off00007544.bin
637c8f006d6913a759d8f757921fabecc00e3de2a1aeddd45bf1e2ec3bed2298
pdf-font-stream PDF embedded font (sfnt) at offset 0x7544 9876 bytes
font_02_sfnt_off0000970d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x970D 4324 bytes