Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e3ca7dbf7ca0ad…

MALICIOUS

PDF

77.0 KB Created: 2021-03-20 07:36:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ee5a4885cac9bfadc1e7313903ab9e60 SHA-1: e178a4c01036ad4faa85652d22a16b9baece8908 SHA-256: 03e3ca7dbf7ca0adf601b50368ed3b62d968abb3e1a55f8b3dcb079c3f8b7bfc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9995

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://ponafet.ru/strik?utm_term=satellites+in+the+sky+tonight+canada PDF link annotation
    • https://cdn.sqhk.co/lekixubegewo/ZnjiRij/94346441897.pdfIn PDF document text
    • http://pabukelib.66ghz.com/wondershare_editor_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/gqhchfo/browser_button_css.pdfIn PDF document text
    • https://cdn.sqhk.co/godivago/exgcgfu/naqaab_bengali_movie_video_song.pdfIn PDF document text
    • http://my-credit.info/supofedokinujr2.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/QhegeAM/bpo_full_form_and_meaning_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/gjgfgic/70182166817.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/iehapl6/pastimes_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/fjejX6s/siwijubenixen.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/bpvIsgh/kapenelunalo.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/TAkhhM7/apple_messages_download_for_windows.pdfIn PDF document text
    • http://simenejigixera.22web.org/division_worksheet_3rd_grade_free_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/fevazufalul/DM4hjid/vr_roller_coaster_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bulenupulabo/hgjfgjg/basketball_stars_unblocked_66_full_screen.pdfIn PDF document text
    • http://teren.fun/funifekabegubizujorog0jkwf.pdfIn PDF document text
    • http://boothattendant.com/21204389487vnogj.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
    • http://vojapulipono.epizy.com/jibuzexejibabudunawoma.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/rigakusi.pdfIn PDF document text
    • http://powajokex.rf.gd/jaan_cartoon_title_song.pdfIn PDF document text
    • http://viladanus.epizy.com/24298298578.pdfIn PDF document text
    • http://kekowowufif.epizy.com/2006_bmw_330i_blower_motor_resistor_replacement.pdfIn PDF document text
    • http://selafaveso.rf.gd/lawanusipazawija.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F6 5160 bytes
SHA-256: 3f489661b9faa752f02156274cf2d9e00918eab2dcce4f3024c94a8b2f161166
font_01_sfnt_off0000f273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF273 11132 bytes
SHA-256: 96736f8c3f2b51b49c4ac028e6f1e9bd5d113d06793f76da5f02c1a3f4f0fd1d
font_02_sfnt_off0001189a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1189A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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