Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6cba10733a6ff6…

MALICIOUS

PDF

92.5 KB Created: 2021-03-03 05:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 656ccb4fba4418279ba4a3c8b6e6b6d3 SHA-1: 3c8016fb326a2cec5f2246d3376e05e540171c80 SHA-256: 2e6cba10733a6ff68b3f5beddcbbbc392562588022fc96a08d2828c838cf45d7
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many hosted on disposable domains or link farms, suggesting a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities or social engineering to redirect users to malicious sites.

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://resalured.ru/wb?keyword=fe%20exam%20prep%20book%20mechanical%20pdf PDF link annotation
    • https://cdn.sqhk.co/kelopifagisu/s5hgcuf/zibeputopubegapafona.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/nGhi0jg/ultimate_coaster_2.pdfIn PDF document text
    • https://fugowekarulosom.weebly.com/uploads/1/3/4/7/134700114/5479697.pdfIn PDF document text
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/numud.pdfIn PDF document text
    • http://bezprovodov.guru/76679529115zz5u1.pdfIn PDF document text
    • https://rifusefabizavi.weebly.com/uploads/1/3/2/3/132303317/06faf57.pdfIn PDF document text
    • https://vutadatibanol.weebly.com/uploads/1/3/4/8/134883393/pavebuzus-robukabidanamas-divatikejifobi.pdfIn PDF document text
    • https://cdn.sqhk.co/bejadelu/8heiahh/cool_planet_names_no_man_s_sky.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/gg4iavN/betefaroku.pdfIn PDF document text
    • https://cdn.sqhk.co/rixakowu/hjgjgjJ/cookie_swirl_c_barbie_unboxing_videos.pdfIn PDF document text
    • https://dolunejasuvufa.weebly.com/uploads/1/3/0/7/130776008/1694e4c4.pdfIn PDF document text
    • https://bepogopinaw.weebly.com/uploads/1/3/4/7/134742936/fovuxudinuvulo_gijowevuwerepo.pdfIn PDF document text
    • http://life-news.tech/origami_diagrams_onlineurpse.pdfIn PDF document text
    • https://buvonage.weebly.com/uploads/1/3/0/9/130969236/xowufaxal-pubafadige-wubexesesuku.pdfIn PDF document text
    • http://getcabinets.xyz/tukadiwekovvkwea.pdfIn PDF document text
    • http://stc-l.ru/vaxetudamegegosomutuxoznpiu.pdfIn PDF document text
    • https://cdn.sqhk.co/xikesurufa/ww6jhhh/bubble_shooter_panda_game.pdfIn PDF document text
    • https://karezolakep.weebly.com/uploads/1/3/1/3/131398125/680b04.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/c5a66c73789d2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001149b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149B 5444 bytes
SHA-256: cfc9b50a07700c983ea2b7621d6d5051a3f55b9461f8acf0ac7d8d5d457a5f28
font_01_sfnt_off000126f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F1 11624 bytes
SHA-256: bd66da76a68b9d27822804ae52b0660ce4f667b0cbb1ee01d4b935763f461429
font_02_sfnt_off00014ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EE1 16180 bytes
SHA-256: b817e2ee3d7037c34927f8ff7095c059e1b82a1d9ea1868fd5960139a24a2b22

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