Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d80b2a66c0a7dc4…

MALICIOUS

PDF

78.9 KB Created: 2021-05-15 02:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04e325dab0750097a79f6330f28069a6 SHA-1: a749611ce9c6a035099245bfb3cf673e4d2bb8eb SHA-256: 6d80b2a66c0a7dc40e830c73182ab4e915ba65ceb24bee0979a1f1ee338b43d9
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 embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure indicate an attempt to distribute or facilitate phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://xezojetit.ru/wb?keyword=lang%20leav%20september%20love%20quotes PDF link annotation
    • http://tevubirufizibun.iblogger.org/thule_bike_rack_lock_instructions.pdfIn PDF document text
    • http://drnextact.xyz/5348119099iu7mi.pdfIn PDF document text
    • https://fumitalabojaluk.weebly.com/uploads/1/3/5/3/135399187/xofur-kofiwatevonenep-fonavozito-kepejimulupoj.pdfIn PDF document text
    • http://lumasilove.iblogger.org/49683205359.pdfIn PDF document text
    • http://look-hotel.com/the_aleph_summaryrrwf4.pdfIn PDF document text
    • http://paximosikelos.22web.org/bassinet_fitted_sheet_adairs.pdfIn PDF document text
    • https://fidagavatijib.weebly.com/uploads/1/3/1/3/131398583/b7b2d6.pdfIn PDF document text
    • http://rimiminigi.22web.org/kosuz.pdfIn PDF document text
    • http://quickstore.pro/asme_code_b31._3969yy.pdfIn PDF document text
    • http://instacopyrightcenter.com/setup_netgear_wnr3500_as_access_pointsefoo.pdfIn PDF document text
    • http://juvugewit.iblogger.org/aiou_admission_form_ba_autumn_2019.pdfIn PDF document text
    • http://pabesubibo.66ghz.com/2908409836.pdfIn PDF document text
    • https://fevegukiso.weebly.com/uploads/1/3/1/4/131482975/ddd79687.pdfIn PDF document text
    • http://tevfikyuce.xyz/pinuxasavajep7o32h.pdfIn PDF document text
    • https://babibogek.weebly.com/uploads/1/3/1/3/131379554/8f3eacf00a.pdfIn PDF document text
    • https://wusuritod.weebly.com/uploads/1/3/0/7/130739885/fatinuwefepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://natizat.epizy.com/fagowedowejoxowogug.pdfIn PDF document text
    • http://telaratar.epizy.com/dibajedexiga.pdfIn PDF document text
    • http://fifomivosa.rf.gd/xaredekapenopig.pdfIn PDF document text
    • http://zofutigo.epizy.com/anatomie_pour_les_nuls.pdfIn PDF document text
    • http://xetorofowuwid.epizy.com/atiga_agreement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f45d61-3516-4f2c-9435-bd199a7329d2/minn_kota_riptide_terrova_bow_mount_trolling_motor_with_i-pilot_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6759c1-23f4-4fb7-96ac-430f3725c06e/38317440861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd58f0c-e2ee-42cf-a4ce-4378eaa09f3e/18907678147.pdfIn PDF document text
    • http://sobajagas.rf.gd/guguvo.pdfIn PDF document text
    • http://zasojogukumor.rf.gd/2475197225.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_off0000f5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F6 5408 bytes
SHA-256: 21bb9b39c5980525837c3f8d0e9f15926aacf573122833c6f1cc2d83c15f0d7b
font_01_sfnt_off0001084a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084A 10836 bytes
SHA-256: 1a908a9d5a3a23559dbe468896bb1cbd5629c9097ec28895a921d0a348d9de14

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