Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a8397d55f491ce…

MALICIOUS

PDF

77.0 KB Created: 2021-03-06 10:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ae17cbf857c4f53988d3818a92afedc8 SHA-1: bc3c5c7be45393bc920999c425fb56072622e7e1 SHA-256: e3a8397d55f491ce360c3485105d051ba75031d563279346f5280110b42b3868
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, specifically as a phishing trojan. It contains numerous external URIs and is identified as a link farm on disposable hosting, indicating a probable attempt to redirect users to malicious sites. The presence of embedded URLs and the nature of the heuristics suggest this document is designed to facilitate the delivery of further malicious content or phishing attempts.

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 https://vilenefex.ru/wix?keyword=amature+bass+tournaments+wisconsin PDF link annotation
    • http://defokozixeral.sportsontheweb.net/kitchenaid_mixer_k5ss_parts.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/resound_cell_phone_compatibility6lrhw.pdfIn PDF document text
    • http://poopo.ru/android_8._1_os_for_pcex8xe.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/how_to_get_share_the_wealth_cards_in_life.pdfIn PDF document text
    • http://civiliscmq.online/80159877127ionla.pdfIn PDF document text
    • http://copyrightprivacy.site/89062065924gvy5b.pdfIn PDF document text
    • http://kuvenumine.mygamesonline.org/alpine_mrv_1000_specs.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/ZghkMie/sujukomonorugotifefutezik.pdfIn PDF document text
    • http://otshelnik.net/panaj6u183.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/gcWifut/51046977001.pdfIn PDF document text
    • https://cdn.sqhk.co/rotonoba/iWhfhj0/25678497826.pdfIn PDF document text
    • http://copyright-help-center.com/usmle_rx_qmax_review0cg1s.pdfIn PDF document text
    • http://artyom.guru/dixawaxamajalexoxuz3tt6c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c587aa41-4045-40b4-a5b7-1b68488a432f/what_is_the_theme_of_annabel_lee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/833228bc-0226-4ab3-98f8-786f24abbefe/nagijavanubipizetuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/466e3bf8-345d-44d4-b03d-722c52bbcfaa/how_many_cubic_feet_is_kenmore_90_series_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dee57f77-9bc0-4599-b27f-66ede5ba2b1c/29711791234.pdfIn PDF document text
    • http://lokokojorivumi.rf.gd/somewhere_beyond_the_sea_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f393cd4d-ae37-4808-bd86-a8eafad44af6/pugufemuserimabijox.pdfIn PDF document text
    • http://gifidabula.atwebpages.com/kofijepamejevofuji.pdfIn PDF document text
    • http://furosusuz.epizy.com/how_do_i_use_my_echo_show_to_video_call.pdfIn PDF document text
    • http://turolikuzadera.epizy.com/77337149825.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_off0000ee8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8C 5132 bytes
SHA-256: 00d8412da5cf42ead97bf6a55efb6c6be595aeb4f8987c0b7c642fb1a1d0505d
font_01_sfnt_off0000fff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF6 11432 bytes
SHA-256: 37a6ccb45267798c4cbb3d8ad6739fe9ec0fa438068a64ec20f256f737a63cd5

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