Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f1397a557049ab…

MALICIOUS

PDF

75.3 KB Created: 2021-02-25 07:26:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bf5e81d43b398657127158b0d5b1500b SHA-1: 4b019cd8725e3fc99740a285c2d68ae07452accb SHA-256: 89f1397a557049abafd7f4f64e057974324585de3e0224b6cc270f76a798a27b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to host malicious content or phishing pages. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score support the classification of this PDF as malicious, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=wets+and+drys+prohibition PDF link annotation
    • http://rocketdocs.us/981584174908rq4n.pdfIn PDF document text
    • http://pumba.fun/21076144935f4nya.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/81368883398.pdfIn PDF document text
    • http://bestcreditcheck.info/metodologia_de_la_investigacion_cesar_bernal_gratisl2tcm.pdfIn PDF document text
    • http://myirn.icu/82355689725eli1p.pdfIn PDF document text
    • http://findonelove.online/zidejopajejujesudbk1r.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/mawegebazebadudevap.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/wejidegepepatebitofit.pdfIn PDF document text
    • http://opticsystem.website/73585494256hz1rn.pdfIn PDF document text
    • https://silodadut.weebly.com/uploads/1/3/2/7/132712229/25424691651475.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/riwafifulokewijiguzegusa.pdfIn PDF document text
    • http://kefovatoxag.22web.org/12884368981.pdfIn PDF document text
    • http://adr-media.work/36681630059wmy7.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/kugupekuvajibidedis.pdfIn PDF document text
    • https://fitisasituwag.weebly.com/uploads/1/3/4/8/134846324/959367b0bc725.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://natomig.rf.gd/sharp_android_tv_app_store.pdfIn PDF document text
    • http://rajamuviw.epizy.com/aptitude_test_sample_apk.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/scorch_trials_free_stream.pdfIn PDF document text
    • http://jejivosijej.rf.gd/80197137898.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFC 5272 bytes
SHA-256: 203e941570471847f3aac5ea0b892c5aa8b7c98146dedb4d51e7a422e30eb5d8
font_01_sfnt_off0000fcee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEE 10208 bytes
SHA-256: 353f8b592932f2a3e31286a4771365fc34719650a70f9a697d033e3f0e1a78e0

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