Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab92366c0b5f865…

MALICIOUS

PDF

72.5 KB Created: 2021-03-23 20:36:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 56aef6feb3acedf72f2a8e6f03c3e606 SHA-1: ca290e2b6be59c7e98db0d7fd6fa4eb5d3724bb6 SHA-256: eab92366c0b5f865006479c7162ad66546775cb2d9587c993bebc9d5f21f4d88
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' point towards an attempt to exploit search engine visibility for malicious redirection.

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://soxebez.ru/aws?utm_term=how+to+fix+paper+jam+in+hp+officejet+pro+8610 PDF link annotation
    • http://xeresorejal.iblogger.org/21399313606.pdfIn PDF document text
    • http://tatalenusonivo.22web.org/avatar_aang_games.pdfIn PDF document text
    • http://movilatur.iblogger.org/kifot.pdfIn PDF document text
    • http://kowezuzapine.66ghz.com/kamitevapenimekewugilup.pdfIn PDF document text
    • https://wunabigoji.weebly.com/uploads/1/3/4/8/134891590/tisibaj-mavodiw.pdfIn PDF document text
    • http://rokonagusedat.22web.org/must_should_ought_to_have_to_exercises.pdfIn PDF document text
    • https://rolewexuvuviwu.weebly.com/uploads/1/3/4/7/134742390/e83be618fce.pdfIn PDF document text
    • https://jileninaniwepuz.weebly.com/uploads/1/3/4/7/134771173/5d0f57cc6.pdfIn PDF document text
    • https://powumebaporisav.weebly.com/uploads/1/3/4/8/134891471/madizizujoguboli.pdfIn PDF document text
    • https://zurejekivob.weebly.com/uploads/1/3/0/8/130813755/domaragojudez.pdfIn PDF document text
    • https://nojesinas.weebly.com/uploads/1/3/0/9/130969722/tavagazix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nelekilegel.epizy.com/wurupalatozalinavifowam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba5654f6-b9c2-4b03-b53a-e100d1f3d75c/sejajesuparimarax.pdfIn PDF document text
    • http://rukojipunuwupur.epizy.com/69119617390.pdfIn PDF document text
    • http://renawexit.epizy.com/dd_sports_live_tv_match_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41370c46-d717-4783-8210-633f3cfffa30/how_does_overlord_light_novel_end.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d7b495-a2c4-4a01-8181-9d8ff45a5bbe/3432862998.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2331724-0a26-4482-878c-e04ab9f12abc/pentair_intellichlor_ic40_replacement_cell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62274ff7-3ecf-4bc1-821e-e30c6af04a37/vegetarian_cookbook_for_beginners_the_essential_cookbook_to_get_started.pdfIn PDF document text
    • http://nubirenewukuz.rf.gd/dreamland_sarah_dessen_sparknotes.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_off0000dd35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD35 5784 bytes
SHA-256: eb31598709f2abd7df994397180c12f31091e09839e9eef4ec72af09c38b6e22
font_01_sfnt_off0000f0e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E5 10432 bytes
SHA-256: 77ed9e5736f9351b4c8e00980ad77377689b7f8537451a91b1014063b41aae21

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