Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfed148322b7388…

MALICIOUS

PDF

81.3 KB Created: 2021-03-14 18:14:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 176355491387c072eafd307a4e535baa SHA-1: 9db2bfbdfbb37087841836e2dded34854781ccd6 SHA-256: 7cfed148322b73886d348fb6311d97f52cd294116ac87fde8533404a9de9b619
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed 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://soxebez.ru/123?utm_term=adolescence+medley++sub+indo PDF link annotation
    • http://potenciy.xyz/plantronics_headset_m70_pairingnxkoh.pdfIn PDF document text
    • http://wijutomotagam.mypressonline.com/lewilunolijusosonow.pdfIn PDF document text
    • http://suwetobolubujub.getenjoyment.net/86936425046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5fd6810eeb82d.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/17720606546.pdfIn PDF document text
    • http://najisemure.medianewsonline.com/vagitakugasafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452377/normal_60130af4952d9.pdfIn PDF document text
    • http://fapseo.ru/command_prompt_commands_windows_10_cheat_sheetwfs7u.pdfIn PDF document text
    • http://letxxnx.org/fisher_price_cradle_n_swing_motor_noisej5aa5.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/19661465250.pdfIn PDF document text
    • http://docita.fun/what_is_average_household_income_in_russiaj4rxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393363/normal_60330ec41fe38.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/java_1._8._0_121_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/isobutyl_chloroformate_reaction_with_carboxylic_acid.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/how_to_make_chicken_nuggets_crispy_in_air_fryer.pdfIn PDF document text
    • http://radanews.site/modal_verb_can_in_spanishp57bw.pdfIn PDF document text
    • http://connexion-amelii.xyz/enthalpy_of_reaction_problems_with_answerss4i8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dca61850-6c5c-4084-bc27-89896f5c3833/3199722897.pdfIn PDF document text
    • http://tifilow.onlinewebshop.net/how_to_write_a_self_review_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ebf0526-ca18-4b8b-a5cb-c87bbb8eb31e/sherlock_holmes_malayalam_books_online.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD09 4812 bytes
SHA-256: 346e34f2b6a956804e99bea9316c19b101b920975551350a7ec25112c3ab9ce2
font_01_sfnt_off0000ed45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED45 10792 bytes
SHA-256: 1562819e197b619d156d330613395079a20f91367760005c44a1eeb7d283fee7
font_02_sfnt_off0001128f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128F 16340 bytes
SHA-256: ee51351c9eb8c6a9dbff1bb743467f39bbaa64eee970481c040e8f02c1ffc4b8
font_03_sfnt_off00012807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12807 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378