Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea7d8193313e3cc…

MALICIOUS

PDF

77.5 KB Created: 2021-03-24 08:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8954ebcd306339418cc04a30008c9939 SHA-1: 0e95daf6b667908bcce745c928720fba2d78bf03 SHA-256: 9ea7d8193313e3cc8a227c983e96b1471cec9cc8855d2414b39017f9573e9ffa
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://golowaki.ru/wix?keyword=the+phantom+portal+prizes PDF link annotation
    • https://zofigaxukinepir.weebly.com/uploads/1/3/4/2/134235574/gadawug-sunezaliwar-toven.pdfIn PDF document text
    • https://vumiluvitut.weebly.com/uploads/1/3/2/6/132696113/8890870.pdfIn PDF document text
    • http://maslovauto.ru/pumatiwitidojare876eo.pdfIn PDF document text
    • http://fixmarker.fun/race_car_games_online_free_no_download8k5lw.pdfIn PDF document text
    • http://virona.org/what_is_the_original_pizza_hut_crustujdks.pdfIn PDF document text
    • https://katodelof.weebly.com/uploads/1/3/6/0/136051175/d78b2d174254.pdfIn PDF document text
    • http://stylecurtains.com/resumen_de_los_crimenes_de_la_calle_morgue_edgar_allan_poe_wikipediagvlvx.pdfIn PDF document text
    • http://garantiya62.ru/troy_bilt_weed_eater_tb685ec_manuallb81y.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/9193068.pdfIn PDF document text
    • http://teksalon.xyz/the_god_who_is_there_carson0qwuv.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/ccd933d84d.pdfIn PDF document text
    • http://tiluvopira.medianewsonline.com/interpreter_of_maladies_sparknotes_a_temporary_matter.pdfIn PDF document text
    • http://masterpowerpoint.com/aeroflex_pipe_insulation_data_sheetkkqub.pdfIn PDF document text
    • http://finuxezanasa.mygamesonline.org/ziwinosuwoxevowa.pdfIn PDF document text
    • http://petrol-v-pol-price.site/dell_latitude_e6410_usb_ports_not_workings2n0s.pdfIn PDF document text
    • http://silkhfig.bid/dd_5e_warhammer_fantasyhw8zl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rinubef.epizy.com/harga_jam_tangan_g_shock_casio_wr_20_bar.pdfIn PDF document text
    • https://65de77fc-0341-4fd2-89b2-cd6b005a91de.filesusr.com/ugd/cf79db_abb531d0807c42eebd772b9957fdf2d3.pdf?index=trueIn PDF document text
    • http://ximipine.epizy.com/best_rap_beat_instrumental.pdfIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_aa98a08e08104f02b71005e649fc2b89.pdf?index=trueIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_51242a0ac1884371a7797927c3a06e46.pdf?index=trueIn PDF document text
    • http://lawijiba.rf.gd/58217554213.pdfIn PDF document text
    • https://9907981b-0bc7-4fd3-a434-169f7cdadf42.filesusr.com/ugd/575363_3f69be891f99403e9fa9c035c0f1b2c7.pdf?index=trueIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_21b830ae7d594c3897c0b3dca0948bf6.pdf?index=trueIn 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_off0000f2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D9 5060 bytes
SHA-256: 410283089a159a40b1a4635bc23063c3992ac53efbc021495f1ce4cba819f170
font_01_sfnt_off000103e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E1 10772 bytes
SHA-256: 449818dc1f5eb7c3c5e300b6a913c63c7df52f77ee4808bc66a5cd150f55649f