Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35d5730ca226005…

MALICIOUS

PDF

76.2 KB Created: 2021-03-09 04:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 09ebc57360d074391f58ef079988763f SHA-1: c7796546c799682ecb6fffb145d618868607d851 SHA-256: f35d5730ca2260057115f38b3e15e04281b43650e4a4b68547e69a0f80f29686
214 Risk Score

Malware Insights

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

The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to suspicious domains, indicating a likely attempt to redirect users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly suggest this is a phishing or malware distribution attempt, disguised with a document title related to healthcare waste management.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=healthcare+waste+management+manual.+pdf In PDF document text
    • http://decideyouself.fun/940837416001kbpf.pdfIn PDF document text
    • http://xasedogamif.mypressonline.com/dopilivowelujimivisu.pdfIn PDF document text
    • http://wersita.fun/adder_logic_circuitwu210.pdfIn PDF document text
    • http://lakcherie.ru/english_workbook_grade_10_answersjsx1l.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/sennheiser_rs_175_wireless_headphones_reviews.pdfIn PDF document text
    • http://italia-doc.fun/max_settlers_in_fallout_4btwi4.pdfIn PDF document text
    • http://trells.space/bifatakagidanopamanisy8z9c.pdfIn PDF document text
    • http://pinerapidsrr.com/numbers_1_to_1000_chartgam7m.pdfIn PDF document text
    • http://grenkasalo4.xyz/75547266374cm73b.pdfIn PDF document text
    • http://alifan.store/59973651519ahxwr.pdfIn PDF document text
    • http://sebevifa.getenjoyment.net/can_adobe_acrobat_9_pro_edit.pdfIn PDF document text
    • http://podcard2020.site/perozisotidigojojezimezuvgk4il.pdfIn PDF document text
    • http://topsale.pro/nespresso_lattissima_refillable_capsulesm94rq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_882a1a229760481190d31610c813d32f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/14982961696.pdfIn PDF document text
    • https://cfc603e6-7cd4-4c42-812b-9722deb80ae4.filesusr.com/ugd/0e9fc2_fbfcc583988b4efb9bc09e142e269415.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/46071913923.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/tefoputuketidanepaban.pdfIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_37a2604c7b564f8ba80779cfa3d49708.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/marzipan_s_answering_machine_17.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/wokivuvubajovon.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/sababapuledir.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/wutudewiwitegagutake.pdfIn PDF document text
    • https://0c2a99dd-71fd-4a0d-b96f-672cfa785c21.filesusr.com/ugd/515c54_57ca7c31842f44b9ba063115940bc604.pdf?index=trueIn PDF document text
    • https://bcd7deca-fd5d-492b-a220-d373ca515bc9.filesusr.com/ugd/12f4eb_0fa173fc29a048cbb12a07e6233cca64.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/37539579081.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_off0000ec0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0F 5652 bytes
SHA-256: ee07e4cbd4a2812a288e16eb575d8214c44d84fedacd290beda63a3f9fbae742
font_01_sfnt_off0000ff2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2F 10552 bytes
SHA-256: dabd8bf8364fce9dd2dd84cdfbe95c6b1b343f625ceb07e0132dba346716c34f

Open this report in the interactive analyzer, or submit your own file for analysis.