Malicious PDF — malware analysis report

Static analysis result for SHA-256 7480e0c3ab0f7f8e…

MALICIOUS

PDF

68.1 KB Created: 2021-03-14 04:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3f20901203937e07f07dc0c89e607323 SHA-1: fd733aa05bf021f0b0093ce7f8d813d7d11c203a SHA-256: 7480e0c3ab0f7f8e091de1d00bcf423d8e6f2bd40e2288ffba7673fae89f536c
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 hosted on disposable domains, suggesting a link farm designed to distribute malware or phish users. The primary URL, 'https://mezovuduw.ru/wix?keyword=my+talking+angela+cheats+coins+and+diamonds', is presented as a lure for game cheats. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=my+talking+angela+cheats+coins+and+diamonds PDF link annotation
    • https://wavopotajulaja.weebly.com/uploads/1/3/4/6/134631105/af8852ff676290c.pdfIn PDF document text
    • http://gemosugobez.22web.org/ice_fishing_guide_service_near_me.pdfIn PDF document text
    • https://siwizapetodid.weebly.com/uploads/1/3/4/0/134041585/xifojiwimeka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_5fd619c37ce7c.pdfIn PDF document text
    • https://bugajexovul.weebly.com/uploads/1/3/3/9/133997498/6776942.pdfIn PDF document text
    • http://kutebirodomo.22web.org/sony_ht_ct370_sound_bar_manual.pdfIn PDF document text
    • https://limowidijepa.weebly.com/uploads/1/3/5/9/135992559/ee366509f893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_6041546ce9682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_6040edaa9a3b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bomafedugu.epizy.com/free_printable_pictograph_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b43853c7-00f4-4dca-ae95-b7c5f6f98c73/mini_dvi_to_hdmi_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e95e97-a1d6-48d6-a204-65794f4839c0/fobaneb.pdfIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_1d1795a7f3b648059058392731c4af79.pdf?index=trueIn PDF document text
    • https://36071b1a-d853-4ad1-bccf-0ed894d94038.filesusr.com/ugd/906e9f_81dce13acf4c4d34b0a44cdba44c1eee.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9149a4e2-fc49-4032-8ce8-bfb007878760/elkay_water_fountain_ezs8l_manual.pdfIn PDF document text
    • https://88749095-6fd7-453f-8e8a-15b48fe47dd1.filesusr.com/ugd/e4d7df_abf50c94d7754d2e98a806b8ebacf1a0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/014ea003-3a16-474f-8eae-64632cc1ea38/bella_dots_collection_12-cup_manual_coffee_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1141ca64-2e61-4620-a4c8-8307d1f8e728/84094645657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f0837c4-b61a-4455-a688-d723da238c30/fatukotobifenat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c76aece-9301-4beb-a68a-f71e2200bac8/reloj_casio_2747_aw-81.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b88b048a-f3fa-476a-9ba9-a165936f7921/bebiku.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_off0000cdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEA 5428 bytes
SHA-256: b6ee50ea9249baf281cbc81c5bc878d4b50fac950f82dcea58e90b7d23c40884
font_01_sfnt_off0000e059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE059 10020 bytes
SHA-256: 4257d2acba4b74432cae3a11cad49c96f9053d39c22e95852afaf1b3354717b0