Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc54172ab29f818f…

MALICIOUS

PDF

74.7 KB Created: 2021-04-06 00:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cea22657ba256f0faf58afad4625689f SHA-1: 2a2805135bb5914aa65de3f7665233da43605516 SHA-256: cc54172ab29f818f3502d9604f8f57ca3d37aea9837e9312867e356b47a5c847
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to redirect users. The document body, though partially obfuscated, appears to be a lure related to appliance repair, likely intended to trick users into clicking the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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=how+to+remove+top+of+kenmore+90+series+washer PDF link annotation
    • https://cdn.sqhk.co/luvunugoz/bb4ihhg/farm_animals_sounds_and_names_songs.pdfIn PDF document text
    • https://bagetakibejo.weebly.com/uploads/1/3/1/8/131871627/da39dc0a9.pdfIn PDF document text
    • http://weroserigo.22web.org/54634840190.pdfIn PDF document text
    • https://cdn.sqhk.co/kuruwoke/C9jgib5/xonidapusetekonojevose.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/jQZgia2/91147955441.pdfIn PDF document text
    • http://teksol.xyz/carl_sagan_pale_blue_dot_videosxo41.pdfIn PDF document text
    • https://cdn.sqhk.co/defegitip/vFuKBje/2002873813.pdfIn PDF document text
    • http://world-wildshop.com/83499752358wqun6.pdfIn PDF document text
    • http://kanshoper.site/88546579754evjf8.pdfIn PDF document text
    • https://jelujivaf.weebly.com/uploads/1/3/4/4/134480095/8650700.pdfIn PDF document text
    • https://cdn.sqhk.co/tomibigi/jeuwiem/pacific_navy_fighter_c._e_mod_apk.pdfIn PDF document text
    • http://ecoterritory.store/heroesland9f073.pdfIn PDF document text
    • https://cdn.sqhk.co/rijolumexeb/eF6gdge/cambrian_period_season_2.pdfIn PDF document text
    • http://axecheat9.xyz/jalifimonnv9c.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/egdifgP/40500488296.pdfIn PDF document text
    • https://cdn.sqhk.co/vovusupa/eCig6id/81827778782.pdfIn PDF document text
    • http://nejoxulogawa.22web.org/what_are_some_keywords_for_description_text_structure.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://emmetrix.net/tribal_wars_wiki_buildingstkj2d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisixapuwalim.epizy.com/dukatimimeparaki.pdfIn PDF document text
    • http://kozirexufogepi.epizy.com/athos_3_trial.pdfIn PDF document text
    • http://wometopususap.rf.gd/cluster_analysis_methods.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_off0000e3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A1 5584 bytes
SHA-256: 95b8607af3776657fda09280572b3920dc09e6d9f1e614bf8010c60b7f7fc47d
font_01_sfnt_off0000f68b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68B 11116 bytes
SHA-256: 8ac56becdd57fd4e310961889890f961f5b660d75dccd2e42cc3fb66855ad28c

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