Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a7fc113e460aea…

MALICIOUS

PDF

76.8 KB Created: 2021-03-16 23:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c04e7356a26c7a6596491d5644929ed3 SHA-1: 7d8988d4c61d2ab3b656a6fe470ec441739ae67d SHA-256: 02a7fc113e460aeacf1451dd0d0011157992f18a8338550dd9d8951c74d4b453
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic firings suggest it functions as a link farm, directing users to external URLs, with one primary URL being `https://golowaki.ru/wix?keyword=dk+eyewitness+germany+pdf`. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://golowaki.ru/wix?keyword=dk+eyewitness+germany+pdf
    • https://static.s123-cdn-static.com/uploads/4426551/normal_5fffe7318b328.pdf
    • https://cdn-cms.f-static.net/uploads/4418379/normal_602ebfb896b7b.pdf
    • http://neyroskakalka.site/le_petit_nicolas_full_movie_123movies9b4gp.pdf
    • http://robolab.one/pillars_of_eternity_guideuh3gm.pdf
    • https://cdn.sqhk.co/wenegifuteg/hgjbDha/41979311376.pdf
    • https://cdn.sqhk.co/gumakulex/d3Jhi0V/access_assets_folder_android.pdf
    • http://repair-kvadrokopterov.ru/font_free_photoshop_cs698s0w.pdf
    • http://viruxego.mygamesonline.org/61578955175.pdf
    • https://cdn.sqhk.co/pukikojat/yiaijh5/buddy_the_elf_throwing_snowballs.pdf
    • http://xagevogewa.medianewsonline.com/how_many_kwh_does_a_tesla_model_3_long_range_use.pdf
    • https://cdn.sqhk.co/bitomasijelo/NxrOgeR/daxikos.pdf
    • http://latuha.com/amc_8_2019_cutoff_predictionhbq54.pdf
    • http://moxegelubopidi.sportsontheweb.net/vivofit_junior_2_or_3.pdf
    • https://cdn.sqhk.co/wenejusuzixe/Ciejaia/99861416914.pdf
    • http://jepewadagamer.scienceontheweb.net/98988368287.pdf
    • http://vebuwovivulab.mygamesonline.org/vehicle_handling_dynamics.pdf
    • https://static.s123-cdn-static.com/uploads/4447079/normal_5ff2366c5e9a2.pdf
    • http://palaxofivuleduj.medianewsonline.com/weber_spirit_210_vs_215.pdf
    • https://cdn-cms.f-static.net/uploads/4375351/normal_6043823628c6d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wovedukevikov/soworozibipelo.pdf
    • http://tavoxelelenasi.onlinewebshop.net/hoover_steamvac_carpet_cleaner_no_suction.pdf
    • https://s3.amazonaws.com/tesotiwapax/rotene.pdf
    • http://fukuselumetu.myartsonline.com/larousse_french_english_dictionary_free_download_for_pc.pdf
    • https://s3.amazonaws.com/febopa/af_form_3571.pdf
    • https://s3.amazonaws.com/sejakopa/66213630061.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec9f.bin
14d714cf33b245fc2c914042c913eac2943a3a7e34dc2a1c0d80a6782842c302		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9F 5584 bytes
font_01_sfnt_off0000ffb9.bin
9dce95c63fb77bc9882750532e347fe46eafcaa303bdf9d03414bf27c79512d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB9 10800 bytes

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