Malicious PDF — malware analysis report

Static analysis result for SHA-256 7129c4329880a824…

MALICIOUS

PDF

83.3 KB Created: 2021-03-17 18:49:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 122fa0d8f49d243b21971603aa3a6ba2 SHA-1: f45892f1432401c7074c50df5ebe1bce467e0dd9 SHA-256: 7129c4329880a824620201433c51e7bc2bcc908bae6aaea2bfef90c7460b516b
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users to malicious sites. Heuristics indicate these links are associated with malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to privacy notices and software downloads, suggesting a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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.
  • 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.
  • 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/award?keyword=aviso+de+privacidad+ifai+pdf In PDF document text
    • http://lnstagram-verifedbadge.com/how_to_get_adobe_premiere_pro_for_free_2020_macbqwpz.pdfIn PDF document text
    • http://f1l3download.site/mr_heater_big_maxx_code_3dnc75.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/ding_dong_music_lyricsa0fs1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_6048f74963f30.pdfIn PDF document text
    • http://tikenifoziv.22web.org/hacking_online_guide.pdfIn PDF document text
    • http://golixudib.mypressonline.com/unknown_market_wizards_book_review.pdfIn PDF document text
    • http://wogizejelalod.iblogger.org/31701084754.pdfIn PDF document text
    • http://skidki-day.site/faxavapadexakegexir8pwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463785/normal_5fda70eb561b0.pdfIn PDF document text
    • http://nutusugeralinet.mypressonline.com/vertigo_exercises.pdfIn PDF document text
    • http://yellownatural.space/what_is_in_fire_and_ice_condomsg44r8.pdfIn PDF document text
    • http://wovemabib.iblogger.org/dufulikulo.pdfIn PDF document text
    • http://safetymirrors.xyz/get_bitmap_file_size_android3dxof.pdfIn PDF document text
    • http://thedefenseforge.com/20828785369z342m.pdfIn PDF document text
    • http://chelamela.org/commandos_4_strike_forcegh2re.pdfIn PDF document text
    • http://copyright-central-media.com/tuburusepivosopavudifaqdrhf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381105/normal_6007f66aab437.pdfIn PDF document text
    • http://bluetea.space/5th_grade_common_core_math_fractions_worksheetsvmbbs.pdfIn PDF document text
    • http://gusanod.22web.org/67160290487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_60137bf397669.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/28657213995.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
    • http://zulesubepire.rf.gd/big_w_job_application_form.pdfIn PDF document text
    • http://jedajokojar.epizy.com/53416023872.pdfIn PDF document text
    • http://gavofuduwaxene.epizy.com/nawiworajumodagumepewilap.pdfIn PDF document text
    • http://xagudixuzafet.epizy.com/advertising_creative_strategy_copy_and_design_download.pdfIn PDF document text
    • http://sewitowapib.epizy.com/learn_english_through_story_the_adventures_of_tom_sawyer_by_mark_twain.pdfIn PDF document text
    • http://zogaxemajov.epizy.com/combat_pistol_training_near_me.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F3 4768 bytes
SHA-256: fba063bb30ae4bfee4fb3406d5c3b359f60609ac3bc1182e386766b80b56e6ec
font_01_sfnt_off00010939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10939 11952 bytes
SHA-256: 9a493c1140d688f09906f921f146300ce73ece8a75f518865e3195f26218487f
font_02_sfnt_off00012ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361