Malicious PDF — malware analysis report

Static analysis result for SHA-256 069f4f92dbc59d2c…

MALICIOUS

PDF

76.6 KB Created: 2021-05-09 23:10:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2fb9ed06c20749a7e0b8c15395ee8160 SHA-1: 9f3d146fa3507d1643b1aade5e847bac85502d4e SHA-256: 069f4f92dbc59d2c56188889a04e01c17aa086471c34a6331522154c4f78fca2
126 Risk Score

Malware Insights

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

The PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It presents itself as a Honda HRV maintenance schedule but contains numerous embedded links, suggesting it functions as a link farm for phishing or malware distribution. The presence of external URIs and a link farm heuristic points towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 http://kajuzumanaz.sportsontheweb.net/68160875122.pdf In PDF document text
    • http://pasikufopubiwo.mypressonline.com/ultimate_comics_spider-man_kim_jest_miles_morales.pdfIn PDF document text
    • http://dubiniba.iblogger.org/donenugawuviralugosej.pdfIn PDF document text
    • http://wakuwafixupo.iblogger.org/gokerolojarefowaximixof.pdfIn PDF document text
    • http://wigojomet.22web.org/does_canon_pixma_have_airprint.pdfIn PDF document text
    • http://zumikavu.22web.org/runecrafting_guide_osrs_f2p.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/tavigadituvanetixodojoj.pdfIn PDF document text
    • http://femetorisufi.sportsontheweb.net/windows_10_for_free_upgrade.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/theme_of_heart_of_darkness_chapter_2.pdfIn PDF document text
    • http://nefovirarud.iblogger.org/bass_boosted_punjabi_songs_2019.pdfIn PDF document text
    • http://padojuputiki.iblogger.org/japan_embassy_manila_visa_application_form.pdfIn PDF document text
    • http://sizixarasejinor.22web.org/eudralex_volume_4_annex_15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dRGGkpkNhSI/wb?keyword=honda%20hrv%20maintenance%20schedule%20canadaPDF link annotation
    • http://laliwuremuxifes.rf.gd/is_the_embryo_haploid_or_diploid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c078ae8a-fb64-4564-aed0-f4a0db0d0cca/62854338227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/554e2c6b-c868-4a96-8ac2-addb33c53580/37399787068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d8460c-209d-4ef5-b0f3-9135bdc23688/what_is_free_will_from_god.pdfIn PDF document text
    • http://bulofowomogi.epizy.com/66402550848.pdfIn PDF document text
    • http://batuzotunar.rf.gd/22399913690.pdfIn PDF document text
    • http://papemekibe.rf.gd/litawalidewow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9533ef7-3dcd-42fa-99ff-11f0487b9f80/13136324329.pdfIn PDF document text
    • http://vuwozefadila.rf.gd/ergonomics_ebooks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6be3b277-17db-4c8a-b901-8decbf5969b4/vatuzesikinusezuromeneru.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_off0000eccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCD 5200 bytes
SHA-256: 2667949db978bc1599495b614cf5c5a220552be28b3e54874863a9acdfffd82a
font_01_sfnt_off0000fe50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE50 11368 bytes
SHA-256: 9e628a23697c01cd114156e005c06f748e3424482018390393e89f1775429727

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