Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d968a06633b49b…

MALICIOUS

PDF

76.5 KB Created: 2021-03-07 16:29:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5e782ddea3782da9f1d631edae4e2fa2 SHA-1: 2bd34f379b3ba157542e10a584a7503c06ffb0d8 SHA-256: 48d968a06633b49bcca086d940389cdc4dd6695bc95f90cef7b4e75bac825f7a
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by multiple heuristics as a phishing lure. The embedded URL `https://yafferge.ru/strik?utm_term=how+to+find+ip+address+on+canon+mx490+printer` is flagged as malicious and part of an SEO-based phishing campaign. While no scripts were explicitly extracted, the PDF structure and malicious link strongly suggest an attempt to exploit the user through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/strik?utm_term=how+to+find+ip+address+on+canon+mx490+printer In PDF document text
    • http://menudajuweka.22web.org/vegolizisa.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/sababimitun.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/cbbfc44cd6.pdfIn PDF document text
    • http://moperala.iblogger.org/fonezabu.pdfIn PDF document text
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/c68053.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/dhgdoia/vorax.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/I8jaifH/rope_hero_vice_town_apk_download_uptodown.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tudulem.rf.gd/fotukizuwidogi.pdfIn PDF document text
    • http://sojuwumupipijo.rf.gd/please_see_below_requested_information.pdfIn PDF document text
    • http://nadezuj.epizy.com/31819540005.pdfIn PDF document text
    • http://jumatomesanore.rf.gd/zugomepaxisigosuwitimidip.pdfIn PDF document text
    • http://pikamumoboxajis.epizy.com/sobakowelazexuxube.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/whatsapp_for_pc_windows_7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/visual_basic_programming_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/electric_renewable_energy_systems.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/will_there_be_a_series_of_unfortunate_events_4.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_off0000ee5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5D 5776 bytes
SHA-256: 800e01469757a265d4e23d577a071b6fcaca019e2557fc07b330626d9a7ab4b7
font_01_sfnt_off0001020f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1020F 10156 bytes
SHA-256: 8207277ff049a0705f1a88716266b6ea792632e4510c56dcc9786c0b4e602aa7