Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b24f985a23742a…

MALICIOUS

PDF

88.5 KB Created: 2021-03-18 13:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: da9d863a9e7360d179eec8d544368608 SHA-1: b7dec6145d0bb9c634e7c3cf3d6a118b0c807dd2 SHA-256: 47b24f985a23742aba645b64cfa770de49db980fc9dd67e8574ae4bcc8d2746e
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://nipisod.ru/123?utm_term=eclipse+ide++for+64+bit PDF link annotation
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/f54c067c2c01.pdfIn PDF document text
    • http://zewamiluwevegif.22web.org/kreepy_krauly_lil_rebel_above_ground_pool_cleaner.pdfIn PDF document text
    • https://bogigusojuvifu.weebly.com/uploads/1/3/4/3/134316749/7513073.pdfIn PDF document text
    • https://cdn.sqhk.co/bexefoboxevi/eSjXsja/13107250318.pdfIn PDF document text
    • http://vuxokiwi.22web.org/a_class_2019_manual_interior.pdfIn PDF document text
    • https://kegegizexuf.weebly.com/uploads/1/3/4/0/134042356/wegisetowexu.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/iakmicK/71288616779.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/galijafafamoremokira.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/wuqgiH3/life_after_death_tvb_english_subtitles.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/ahgijfz/titan_quest_review_ps4.pdfIn PDF document text
    • https://zetoruribafepa.weebly.com/uploads/1/3/1/4/131452904/dukodoludid_wikitajesoxaxu_nukaz_gidir.pdfIn PDF document text
    • http://xesepoxobij.22web.org/vupipoxolipiwom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/veledabejufi/22077578956.pdfIn PDF document text
    • http://pudegiluv.epizy.com/86538788081.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/casio_fx-260_solar_ii_fraction.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/jatewapowotuzewimapamawed.pdfIn PDF document text
    • http://kubalomarupageb.epizy.com/gusep.pdfIn PDF document text
    • http://zinezalidoratov.rf.gd/microsoft_access_2007_tutorial_in_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/12165035865.pdfIn PDF document text
    • http://fifowofuzapuzo.epizy.com/fmea_excel_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/mefogobovepomateziruxegir.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/63266848447.pdfIn PDF document text
    • http://pamuxizuj.epizy.com/what_are_the_different_types_of_tags_in_html.pdfIn PDF document text
    • http://kifilexaxinazer.epizy.com/list_of_sheet_names_in_excel_vba.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA07 4960 bytes
SHA-256: 4ff2dc5e28bc7f07e3f03b6e96605e65f2af685e7c71cb31cb774f3f06ff690a
font_01_sfnt_off00010af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF5 10816 bytes
SHA-256: d5a057c8b9c4f431866d5fbe8eb1d5eaca8b3adc8eacf15e30b3ad38fa21dc07
font_02_sfnt_off00012fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FC7 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90
font_03_sfnt_off0001445e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1445E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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