Malicious PDF — malware analysis report

Static analysis result for SHA-256 171f640fc704fc26…

MALICIOUS

PDF

84.2 KB Created: 2021-02-22 18:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b1381946b41b63525c852f6203d265f5 SHA-1: 1885dab94c599b3f698c6941d81597f3e31ed664 SHA-256: 171f640fc704fc26be7bf531ad02349512a201c0bd31925e3466e18f5871ae85
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. ClamAV and ML classifiers flagged this file as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URIs strongly suggest an intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://jottigo.ru/wix?keyword=forerunner+235+manual PDF link annotation
    • https://cdn.sqhk.co/zupololano/ciixGia/pin_diagram_of_ic_ne555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465938/normal_600b115f5a057.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/VhfkgdQ/belunagekabajuni.pdfIn PDF document text
    • http://copyright-help-report.com/xotovuwovoporidudazavutabaz51z.pdfIn PDF document text
    • http://mebelrostov.ru/nilopadesajepamodes2lf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369491/normal_5ffb0525bdf97.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/CXGhfcP/68672579274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383698/normal_5fd9f2fba9297.pdfIn PDF document text
    • http://biotringel.shop/is_there_a_love_triangle_in_a_court_of_thorns_and_rosest2ah5.pdfIn PDF document text
    • https://cdn.sqhk.co/samekikogeri/cUU2DWf/cute_anime_wolf_girl_drawings.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484624/normal_600304a1e4385.pdfIn PDF document text
    • http://muruxilirafet.iblogger.org/files_to_sd_card_android_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416321/normal_6000034598426.pdfIn PDF document text
    • http://obschee.xyz/the_setting_sun_and_the_rolling_worlddkbip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zamudijofo.epizy.com/74176349573.pdfIn PDF document text
    • http://vovajixavago.epizy.com/stylesheet_is_missing.pdfIn PDF document text
    • http://vikokaras.epizy.com/autograph_bengali_movie_free_full.pdfIn PDF document text
    • http://viromumixemet.rf.gd/samsung_refrigerator_model_rf263beaesr_aa_manual.pdfIn PDF document text
    • http://fukesok.rf.gd/bsc_hons_full_form.pdfIn PDF document text
    • http://fuvituze.epizy.com/ashutosh_maharaj_ji_ki_photo.pdfIn PDF document text
    • http://lefamuredemupi.epizy.com/mepujubugeg.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5F 5028 bytes
SHA-256: 56b9ce12a95b6543891101fc5de48f3c10f61a42dd3b6755c1e16246f5d8b78a
font_01_sfnt_off00011f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F64 10592 bytes
SHA-256: 22d94dcb4df8b6ada2b8521a62deb3a2a9fb9f788c0915aecda2d18886d72628

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