Malicious PDF — malware analysis report

Static analysis result for SHA-256 0049f71b5dfac676…

MALICIOUS

PDF

71.8 KB Created: 2021-01-11 01:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1ddb4d22427f72b8e567c30672df0281 SHA-1: 7799bdc02070847656930c9c6d7db4f87871f91d SHA-256: 0049f71b5dfac676a2de1f3fc41e99ee628fe05ef98731734451a0bb35b5e51b
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain text related to search queries, suggesting a phishing or scam lure. The presence of numerous links hosted on disposable domains further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffmen.ru/123?utm_term=what+does+noaa+weather+radio+stand+for In PDF document text
    • https://cdn.sqhk.co/bulamije/Jm7ijzT/barupugonidu.pdfIn PDF document text
    • https://sebidodeg.weebly.com/uploads/1/3/4/4/134438526/xofozovusero_japogom.pdfIn PDF document text
    • https://site-1175722.mozfiles.com/files/1175722/dungeon_quest_weapon_calculator.pdfIn PDF document text
    • https://limorevoxa.weebly.com/uploads/1/3/4/6/134611026/7d2cb2ab50559.pdfIn PDF document text
    • https://litaxavuve.weebly.com/uploads/1/3/4/8/134848922/8912964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f9b9db48112d.pdfIn PDF document text
    • https://site-1168056.mozfiles.com/files/1168056/paduzamemupemoguk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/flipaclip_apk_pure.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/bollywood_movies_song_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/99607291760.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/bed_bug_report_anaheim_hotels.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/44551162792.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6F 4856 bytes
SHA-256: b3fbdf7346f6f22aa0b992e4d5ea76b459531c126b12f0d3372808539deb9fde
font_01_sfnt_off0000dff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF6 10532 bytes
SHA-256: a1d18d42af06f1821200e86b71e44ab388eb63fedd57e761ece11f7ed99f1e6a
font_02_sfnt_off000103d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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