Malicious PDF — malware analysis report

Static analysis result for SHA-256 7106ae6887517e5e…

MALICIOUS

PDF

71.5 KB Created: 2021-03-18 01:05:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: eb3238c6ccc246c364a0e7b531ba63c9 SHA-1: 01954bdee1a8bd7aae4b96fda21793e00cd7a9ad SHA-256: 7106ae6887517e5e996faeaeb924adee37a8265b70903da15618b1bd72662403
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external PDF files hosted on disposable domains, likely as a lure for phishing or malware distribution. The presence of a 'Remote-support tool lure' heuristic suggests the document may attempt to trick users into installing or connecting to such tools, which is a high-risk activity in unsolicited documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://lozipotod.ru/wix?keyword=life+science+study+guide+pdf PDF link annotation
    • https://sejusidanixaj.weebly.com/uploads/1/3/4/3/134374441/tigezitosa.pdfIn PDF document text
    • http://urro-hu.com/how_to_travel_with_uppababy_vistaygmtl.pdfIn PDF document text
    • https://majosipodolonax.weebly.com/uploads/1/3/0/8/130814003/4200a250.pdfIn PDF document text
    • https://lexedixejorew.weebly.com/uploads/1/3/1/4/131438453/6114476.pdfIn PDF document text
    • http://heleogose.online/49088473727siln0.pdfIn PDF document text
    • https://nagaxubonafebax.weebly.com/uploads/1/3/1/6/131606673/3bbaca1ae.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/whats_dating_mean_to_you.pdfIn PDF document text
    • http://biotringel.shop/blood_of_elves_book_seriesqei9l.pdfIn PDF document text
    • http://obmenkalnr.online/how_to_calculate_interval_timeyw8hj.pdfIn PDF document text
    • http://introdom.ru/mcdonald27s_operations_and_training_manualsytu1.pdfIn PDF document text
    • http://pisumuvate.sportsontheweb.net/brochure_templates_free_download.pdfIn PDF document text
    • https://tepimetasufiro.weebly.com/uploads/1/3/4/0/134012902/kuzugagetusexekaw.pdfIn PDF document text
    • https://gidaletibom.weebly.com/uploads/1/3/4/8/134881461/zikugipewezoxevezu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_d67329ea28f94186ba60baa6cfdc54c6.pdf?index=trueIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_8026f788f174445a94e30d67d25801f2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/eberron_players_guide_4e.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/53841160222.pdfIn PDF document text
    • https://3a5aa097-47f9-475f-9992-83bceef25cc3.filesusr.com/ugd/f55bec_db9bde33f4214270a63ffdff945417df.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rotowan/teamviewer_10_free_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/357665323.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/quick_heal_antivirus_software_for_laptop.pdfIn PDF document text
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_a6800d94145043b1a63c3759a40ffab0.pdf?index=trueIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_f2cfecc05feb426695ae96aec20d01f4.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4B 5028 bytes
SHA-256: 5fc5400af7dc1412ae8a5a9993642fb50432182f4f1bfd9a726e11e6d21aa53f
font_01_sfnt_off0000ee96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE96 9972 bytes
SHA-256: 671be612732eeb801691fac7c7359628667901ff78bc2e6e6897053ca0c80725

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