Malicious PDF — malware analysis report

Static analysis result for SHA-256 0189e722e7e5ddf2…

MALICIOUS

PDF

84.5 KB Created: 2021-02-25 19:27:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 27aef73f2e62bcc229e5f91cb92f15a6 SHA-1: 9405aaca91482f678555d3fb59de9a803884647d SHA-256: 0189e722e7e5ddf2254a313042d4efa457b85ece884658d5f93a21b6282a92ac
182 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a medium alert for being a link farm on disposable hosting. ClamAV also detected it as a phishing trojan. The numerous embedded URLs suggest an attempt to lure users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7143

Heuristics 4

  • 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 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.
  • 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=bpsc+cadre+code In PDF document text
    • https://romigugegis.weebly.com/uploads/1/3/1/3/131384185/lipixar_futomisuniji_wamomib.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/biografias_de_los_personajes_mas_importantes_de_la_independencia_de_mexico.pdfIn PDF document text
    • https://lopetumidola.weebly.com/uploads/1/3/3/9/133989387/db158bb8c.pdfIn PDF document text
    • https://pirulilepeno.weebly.com/uploads/1/3/4/0/134040853/6010804.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/igoihgg/71685818378.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/eyelash_extension_training_foundation_program.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/what_is_an_ivr_pin_for_unemployment_colorado.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/alpha_word_in_urdu_alphabet.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/little_book_of_common_sense_investing_amazon.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/what_are_the_stages_of_disaster_recovery.pdfIn PDF document text
    • https://bevereka.weebly.com/uploads/1/3/0/7/130739533/fowavewipuf.pdfIn PDF document text
    • https://lekumoga.weebly.com/uploads/1/3/2/6/132683130/2604121.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/fBhigjJ/build_a_bear_frog_overalls.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/1_metro_cuantos_centimetros_son.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/how_to_write_a_review_lesson_plan.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/xbox_live_fehler_8015d002.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/nasb_macarthur_study_bible_2nd_edition_premium_goatskin_leather.pdfIn PDF document text
    • https://zelowomuguzak.weebly.com/uploads/1/3/1/3/131379017/3067221.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogofideb.onlinewebshop.net/6759981138.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC75 5084 bytes
SHA-256: 4736fbe4a5e60c46e37abeaba1d5cf199dbda4996916200a1d27a643d68dae58
font_01_sfnt_off00010dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCB 13576 bytes
SHA-256: 6b7d44279f55e6109776b0b1460c664815600d5d0d8a1b38e8bd9a8d59a47249

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