Malicious PDF — malware analysis report

Static analysis result for SHA-256 437d34b40f65ef12…

MALICIOUS

PDF

73.4 KB Created: 2021-06-10 18:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ddf377e6752d3264a55a870b40d6571 SHA-1: 047b4a461a3335f804754e5d04942084437c25ba SHA-256: 437d34b40f65ef128b53c2a1d6204950334dcb80626ed0989490a66f974547a0
156 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'PDF_SEO_LINK_FARM' heuristic and the presence of numerous external URLs. The primary malicious URL identified is 'https://allytemp.ru/pbw?utm_term=shootout+at+wadala+movie+download+480p', which is likely intended to deliver a payload or conduct further phishing activities. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • 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://allytemp.ru/pbw?utm_term=shootout+at+wadala+movie+download+480p PDF link annotation
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/1a0798f9514c.pdfIn PDF document text
    • https://nafufarub.weebly.com/uploads/1/3/4/2/134266214/008da.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/memepedowuzoja-woxiz-pibemadajal.pdfIn PDF document text
    • https://tunivarururi.weebly.com/uploads/1/3/4/0/134041149/ludig_kejom_metuwi_sakipatipat.pdfIn PDF document text
    • https://tusutaxuwipafu.weebly.com/uploads/1/3/4/4/134403355/koxolulezanikaguxuve.pdfIn PDF document text
    • https://xitenewoz.weebly.com/uploads/1/3/4/3/134314294/a0e38.pdfIn PDF document text
    • https://gawujura.weebly.com/uploads/1/3/5/3/135325150/kavanabakedol.pdfIn PDF document text
    • https://sebezubajisiv.weebly.com/uploads/1/3/0/7/130740163/660342.pdfIn PDF document text
    • https://xezixopizanew.weebly.com/uploads/1/3/5/3/135314636/5c898.pdfIn PDF document text
    • https://tigasuzile.weebly.com/uploads/1/3/1/3/131379741/fajiraned_nazosi.pdfIn PDF document text
    • https://wixapikolomuv.weebly.com/uploads/1/3/4/7/134746431/b993e8619a.pdfIn PDF document text
    • https://kitenogoxaginup.weebly.com/uploads/1/3/5/2/135298643/benixafofuw_sefiteda_fuwatopopesaga.pdfIn PDF document text
    • https://lufowatevumidoj.weebly.com/uploads/1/3/4/7/134704320/4aea07b6d71da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9744dcd6-6756-4e42-8eca-fa7082e38757/sacred_geometry_tattoos_and_their_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b4dedb-265b-4bdc-bf61-a596f31e65db/como_ser_un_buen_lider_en_un_grupo_de_trabajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a9822e-a56c-45b9-bb1b-6c38026c6462/lol_patch_11.1_tier_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5c9c93e-9b02-4d52-88ba-d5c4980cacf7/japomubodujipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f55010-9538-4f4b-b5ac-ae84874b7386/the_lion_king_full_movie_part_1_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/477bd580-c1b1-4d64-b579-85dc8a895ccd/7110169123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c14ab182-8990-4f5f-9c4f-b8e9820f4035/pivivufelelale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0dc71d1-4836-4ec4-b043-98bc677d8c4a/acer_cb3-532-c47c_15.6_chromebook_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d787c84f-f35d-4f5c-8c5a-69a977e3ef54/36386666876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee68b931-1575-4452-88ce-52a41957ebc3/hoja_de_seguridad_del_reactivo_de_barfoed.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfdb.bin
48ee2088b37d3d5e9db96a04406f66873c7000ceee087c15099509ee37a675b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDB 5604 bytes
font_01_sfnt_off0000f2e5.bin
e4c22f16f8d4499d1c0db3cd08c67e79134cbf61abbb608b0198fb59c8548e6e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E5 10812 bytes