Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d570bafd8134ed…

MALICIOUS

PDF

96.3 KB Created: 2021-03-01 03:57:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6475f76f77e10073e900234bdb6b02cf SHA-1: d45715a437e70b26dd26cc19b3e16ca4223eb9ed SHA-256: 07d570bafd8134edbd4d2d2e65e85e6fe43406d9a1852deaa98e2a5185801798
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, many pointing to disposable domains and link farms, strongly suggests a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains references to wkhtmltopdf and a date, but no clear textual lure is discernible. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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/strik?utm_term=does+costco+sell+nespresso+coffee+pods PDF link annotation
    • https://cdn.sqhk.co/tobizopowebo/iifhdgd/fgteev_soundboard_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426075/normal_601bf903cc9c0.pdfIn PDF document text
    • http://zelaxukixut.iblogger.org/anambra_state_university_post_utme_form_out.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/giihicH/zadupejupuxopa.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/sikifaruzoxekojegudobomo.pdfIn PDF document text
    • https://cdn.sqhk.co/zaliroded/fEidkTh/survival_kit_for_salesman.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406482/normal_5fe1f764d6e3a.pdfIn PDF document text
    • https://cdn.sqhk.co/xetokive/hbcidic/89094229119.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/hajbdpe/nhl_standings_2020_western_conference.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/qPeIgcC/undatakah_recurring_villain.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/74626339394.pdfIn PDF document text
    • https://cdn.sqhk.co/pidefatop/jdEhblQ/duxodibejuvedefipisinejiw.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/sewofozotezasuwasotigegiz.pdfIn PDF document text
    • https://cdn.sqhk.co/xazakamugi/CL0Pjcm/20542203331.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/wuwepixebukumigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_6035278c00c02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luzigipo.epizy.com/tratamiento_de_anemia_perniciosa.pdfIn PDF document text
    • http://dedamedasobime.epizy.com/41902427631.pdfIn PDF document text
    • http://dojeranorered.epizy.com/mamolukizevomusigebavivor.pdfIn PDF document text
    • http://vawirir.atwebpages.com/why_did_defending_jacob_change_ending.pdfIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/69491516986.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_off0001392a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1392A 4936 bytes
SHA-256: 5d6b004542dcb8536f0f6c1d75b328f8131ac8b4103ff58af46d724cd4e119f9
font_01_sfnt_off00014a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A0F 12324 bytes
SHA-256: 3caeabcdc5f3cbbaddd575f372a837fb9c8d14050d456a1736ca9aed42157915

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