Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0962401e6f5cab…

MALICIOUS

PDF

93.5 KB Created: 2021-04-04 19:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e80cc9926bdb9d83bbf063b1af6107d6 SHA-1: 81edab624c7b38296aa174e030e25e56d8839105 SHA-256: 3b0962401e6f5caba5a3c2405b1955b646c89cf3d14ab449bae2e490350bb3bf
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The primary URL observed is https://bologen.ru/wix?keyword=pokemon+emerald+battle+frontier+team+guide, which likely serves as a lure. No scripts were extracted, but the PDF structure itself facilitates the redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/wix?keyword=pokemon+emerald+battle+frontier+team+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486965/normal_603264dcbc59b.pdfIn PDF document text
    • https://cdn.sqhk.co/wetaxawirewu/Kjb2Igc/89070192452.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422386/normal_604cc7992ca91.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/1A74U5V/39227166514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_605f89049d4f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://c7f0abc7-d23b-482d-bd16-0771495bb668.filesusr.com/ugd/bb13a2_21ec459af0694ef99a978b8b984475ee.pdf?index=trueIn PDF document text
    • https://5a98ae10-8c7e-48da-b83f-9bcbc644cfa3.filesusr.com/ugd/9a8764_03de9b9b6fa742d3b91004f8c4f33581.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/varolexexus/remabebukotagumegixa.pdfIn PDF document text
    • https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_3c46a371fe8144b69dd041b96b95a34a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pusixa/92822817809.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/4_pronged_approach_in_reading.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/detroit_become_human_android_led_buy.pdfIn PDF document text
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_6adb4dcc29604851847f85705f2622a8.pdf?index=trueIn PDF document text
    • https://41c240d9-b4af-4f88-8fa4-2a41cce3a287.filesusr.com/ugd/01bc73_cf66f1f683e741a1986534a9f1df0556.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/doncaster_free_press_court_report_september_2019.pdfIn PDF document text
    • https://09af0a6c-c0e6-47ff-90c1-5b173435ccd1.filesusr.com/ugd/b92b66_88791ef1ea6a49a6b5de46ee8e73a5f3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/96686714640.pdfIn PDF document text
    • https://74fc1a11-d445-4ffb-bc6b-7a79e5a65a18.filesusr.com/ugd/097bd5_d8821219ceba4312972c3612a1dce788.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zalomi/69310455933.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75A 8108 bytes
SHA-256: f4c4dee2224cdfcbc4c2fa62c32f585f0697ff5c989e1614f532e423c9263bbc
font_01_sfnt_off000112e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E1 5252 bytes
SHA-256: 80dfa97f00b17da0514748447ba926766d3f70afeac0688a38c810b01e8aaf1c
font_02_sfnt_off000124a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A2 7544 bytes
SHA-256: c6b461577473ce3cae50698e53fd0c330754b9a022b3b1385997852f738645f1
font_03_sfnt_off0001393c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1393C 14840 bytes
SHA-256: 0d7555d4b23e35f1b393724c8f8b79647ed2a22895f72db5176b3984b24b13b8

Open this report in the interactive analyzer, or submit your own file for analysis.