Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec3082ad0182bc7…

MALICIOUS

PDF

82.5 KB Created: 2021-03-13 21:14:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8869e493962fe7e2ec3f93f37101cf37 SHA-1: dd0d149ee90e6a8c3d30596fdae7eac40ce11407 SHA-256: 0ec3082ad0182bc7b8f4e0788067baa0bcfb22a1b5dc98e9b89f9c161a7fbb36
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links pointing to various domains, many of which are hosted on disposable platforms like Weebly. This behavior is indicative of a link farm, often used to manipulate search engine results or to distribute malicious payloads. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=que+es+una+imagen+satelital+landsat PDF link annotation
    • https://wigazasadus.weebly.com/uploads/1/3/5/9/135974004/komeg.pdfIn PDF document text
    • http://alifan.store/4201888959256nlf.pdfIn PDF document text
    • https://kusafulidofet.weebly.com/uploads/1/3/4/0/134017607/timamaj_mifavuf_vefajixapaja.pdfIn PDF document text
    • http://smilex.club/99337473479rp480.pdfIn PDF document text
    • http://wisitens.online/black_and_decker_20v_cordless_trimmer_run_timeznlta.pdfIn PDF document text
    • https://radofagomomixa.weebly.com/uploads/1/3/4/1/134132329/teliraj_vekuke_jomixelenupos_ribebefo.pdfIn PDF document text
    • http://businesshelpservice.com/libros_de_mecanica_del_automovildjx7l.pdfIn PDF document text
    • https://gumulopeviw.weebly.com/uploads/1/3/5/3/135348062/8305156.pdfIn PDF document text
    • https://xidibifolun.weebly.com/uploads/1/3/2/7/132710634/xefisatogir.pdfIn PDF document text
    • http://twitter-center.com/17891464321xnejk.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/b724c2839f6.pdfIn PDF document text
    • http://xozonline.ru/2003_dodge_neon_dashboard_lightspqeee.pdfIn PDF document text
    • https://sererepe.weebly.com/uploads/1/3/3/9/133999843/ae9d1e.pdfIn PDF document text
    • https://xomowozijirogap.weebly.com/uploads/1/3/4/6/134667332/mirutakil.pdfIn PDF document text
    • https://wiloropijevor.weebly.com/uploads/1/3/5/2/135299547/7932285.pdfIn PDF document text
    • http://2020coupons.info/discussion_questions_to_kill_a_mockib0zn1.pdfIn PDF document text
    • http://rubisteq.online/when_is_the_next_diary_of_a_wimpy_kid_book_coming_out_2020vxk3h.pdfIn PDF document text
    • http://tugrull.com/zabexemelupetowzzi.pdfIn PDF document text
    • http://karnaval.host/calligrammes_apollinairelc474.pdfIn PDF document text
    • http://gratoraama.space/53618095562s2hx0.pdfIn PDF document text
    • http://birjand.design/58257859663u152s.pdfIn PDF document text
    • http://goodshopsales.xyz/6708526687010228.pdfIn PDF document text
    • http://sodalabs.pro/noximugidoxomumukuzuwir1mc9l.pdfIn PDF document text
    • http://salopkisa.website/fudusj9jo1.pdfIn PDF document text
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/magixi.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://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_off0000f4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A4 4884 bytes
SHA-256: 6153daf04d28536b37c9e11d9e28b5aa9917be513889868c92094502a1eecbcd
font_01_sfnt_off00010525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10525 12120 bytes
SHA-256: bf06b0063b8e5ecc3f6bca6a2f738b4100c71081aa3c05dd9076d0c9d0d90cf5
font_02_sfnt_off00012c31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C31 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3