Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1c11f54dc34699…

MALICIOUS

PDF

77.7 KB Created: 2021-04-11 06:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6fa8f8aca6ece0c3937465ff3dae59b2 SHA-1: 6409792fc1b8d86d6806ce17a791e8f21a98ea96 SHA-256: ea1c11f54dc34699b84409c52da95ec075515bbeaf70b6020b4550ddd4e47b16
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous embedded URLs, with a notable heuristic identifying it as a link farm on disposable hosting, specifically pointing to 'http://iceteas.space/59661560171fqtwo.pdf'. The presence of external URIs and the overall structure suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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://kuzutuzo.ru/strik?utm_term=real+estate+investing+for+dummies+4th+edition+pdf PDF link annotation
    • http://iceteas.space/59661560171fqtwo.pdfIn PDF document text
    • http://internet-babki.ru/how_to_do_a_double_crochet_for_beginnerscagb9.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/nimusolavawagivixigusza943.pdfIn PDF document text
    • https://pozitolize.weebly.com/uploads/1/3/4/3/134330731/xidudemefuke.pdfIn PDF document text
    • http://workmonster.net/kosew1qb6s.pdfIn PDF document text
    • https://kikebepuziji.weebly.com/uploads/1/3/0/7/130775256/xidekapupen.pdfIn PDF document text
    • https://xavapijiwo.weebly.com/uploads/1/3/3/9/133997403/9690a76189d3d2.pdfIn PDF document text
    • http://golden-charm.ru/how_much_does_a_new_honda_ruckus_costwxaam.pdfIn PDF document text
    • http://christinaanddavid2019.com/nivubudalifedobewenenowakipcj.pdfIn PDF document text
    • http://yourdesk.website/76715343928u7k9p.pdfIn PDF document text
    • http://snail-case.store/jesurivuwenofoveko8dwrn.pdfIn PDF document text
    • http://xuxazefovudiwe.iblogger.org/21020764029.pdfIn PDF document text
    • https://kigumafu.weebly.com/uploads/1/3/4/1/134131380/zanuwanuzozi.pdfIn PDF document text
    • http://copyright-helps-team.com/how_to_teach_yourself_self_control_with_foodmtx02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a96990da-dd17-4b11-844c-aba2d588d1b6.filesusr.com/ugd/5e5e7b_21f27df75ccb4d9a9035dd5e03790eca.pdf?index=trueIn PDF document text
    • https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_7477d082b28d44a3bbd6a5b066ef685f.pdf?index=trueIn PDF document text
    • http://kimejuj.rf.gd/sample_reporter_interview_questions.pdfIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_3a0bb27cc7084c1daffd95f7ab6c108d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/forupokisip/83517219538.pdfIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_49dbce7873124ba6ba337776952d0bae.pdf?index=trueIn PDF document text
    • https://184d393c-d2ff-49e5-bbcb-48626b1dbf88.filesusr.com/ugd/49be48_da8f3abc0077405b93f9bfccbcfc0f9f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/14928176063.pdfIn PDF document text
    • http://beperedusewigu.epizy.com/markovnikov_rule_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/overlord_light_novel_volume_13_english_translation.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_off0000f130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF130 5612 bytes
SHA-256: 16868fb6cfc17e78ff32698d0657a8825f5b7bf26ba5e53640d76f5f8b7e2039
font_01_sfnt_off00010438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10438 10624 bytes
SHA-256: c21853b4e896cda60e01afce9408d528410569e5123f5e74326ee82274a93b76

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